Urea [NH2CONH2 ] or ammonium phosphate [(NH4 )3PO4 ] [K = 39, P = 31, O = 16, N = 14, H = 1]. (Al = 27, N = 14). asked Feb 28, 2019 in Chemistry by Anjal ( 76.7k points) mole concept Calculate the percentage of sodium in sodium aluminium fluoride (Na3AlF6 ) correct to the nearest whole number. (ii) The percentage composition of sodium phosphate as determined by analysis is 42.1% sodium, 18.9% Phosphorus and 39% oxygen. The number of electrons in each of platinum's shells is [2, 8, 18, 32, 17, 1] and its electron configuration is [Xe] 4f 14 5d 9 6s 1. Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6 (Give your answer correct to the nearest whole number). calculate the percentage of ammonia in a sample if 0.2115g gave rise to 0.4693g platinum.? Calculate the percentage of platinum in ammonium chloroplatinate, (NH4)2PtCl6. [Pt = 195, N 14, H = 1, Cl 35.5] (b) A flask contains 6.6 g of carbon dioxide. He succeeded in making malleable platinum by alloying it with gold, dissolving the alloy in aqua regia, precipitating the platinum with ammonium chloride, igniting the ammonium chloroplatinate, and hammering the resulting finely divided platinum to make it cohere. Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6. Find its empirical formula (Atomic mass of C = 12, H = 1, Br=80). Platinum is then precipitated from this solution as ammonium chloroplatinate. Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6 (Give your answer correct to the nearest whole number). [N = 14, H = 1, Pt = 195, Cl = 35.5] (Give your answer correct to the nearest whole number.) The precipitate was filtered, washed free of precipitating agent, dried, and weighed, and 0.5718 g was recovered. If you look at the two equations, it is clear that 2mol NH4+ result in 1 mol Pt. Synonym: Hexachloroplatinic acid solution, Hydrogen hexachloroplatinate(IV) solution, Platinic chloride solution, Platinum(IV) chloride solution Linear Formula: H 2 PtCl 6 Molecular Weight: 409.81 The number of electrons in each of platinum's shells is [2, 8, 18, 32, 17, 1] and its electron configuration is [Xe] 4f 14 5d 9 6s 1. 444 parts of ammonium chloroplatinate contains 195 parts by weight of platinum. Find the empirical formula of the compound (work to upto two decimal places). Exercise | Q 10 | Page 119. Calculate the percentage of phosphorus in the fertilizer super phosphate, Ca(h2PO4)2 6. Platinum (atomic symbol: Pt, atomic number: 78) is a Block D, Group 10, Period 6 element with an atomic weight of 195.084. If the relative molecular mass of ammonium nitrate is 80, calculate the percentage of nitrogen and oxygen in ammonium nitrate. 5. Platinum is an attractive silvery white metal with a melting point of 1,774 deg C, a boiling point of 3,827 deg C and a density of 21.45 g/cu cm at room temperature. Also, when elements are enclosed in parentheses, the subscripts on the inside are multiplied by the number … pllzz ans 2nd no link pllzz compound is czH204 PRACTICE PROBLEMS-IV I Calculate the (a) empirical formula, and (b) molecular formula of a compound having the Sodium = 42 10/0, phosphorus = 18 9% and oxygen = 39 % Given that the molecular mass of the - Chemistry - The percentage composition of sodium phosphate, as determined by analysis is : 42.1% Na, 18.9% P, 39% of O. Calculate the percentage of nitrogen in aluminium nitride. 1. % NH3. In the presence of 1M NH 4 Cl, its solubility is only 0.0028 g/100 mL. 6. 2. 1 answer. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Question 1. Report Error. Ammoniacal nitrogen can be determined by treatment of the sample with chloroplatinic acid; the product is slightly soluble ammonium chloroplatinate: H2PtCl6 + 2NH4+ = (NH4)2PtCl6 + 2H+ The percipitate decomposes upon ignition, yielding metallic platinum and gaseous products: (NH4)2PtCl6 = Pt(s) + 2Cl2(g) + 2NH3(g) + 2HCl(g) What is the percentage of ammonium in a sample of 0.2213g of … Find the empirical The precipitate decomposes on ignition, yielding metallic platinum and gaseous products: (NH 4) 2 PtCl 6 →Pt(s) + 2Cl 2 (g) + 2NH 3 (g) + 2HCl(g) Calculate the percentage of ammonia in a sample if 0.2115 g gave rise to 0.4693 g of platinum. [C = 12] (Answer to the nearest kg. (ii) The number of molecules of carbon dioxide present in the flask. Calculate the percentage of ammonia in a sample if 0.2490 g gave rise to 0.4943 g of platinum. asked Feb 28, 2019 in Chemistry by Anjal (76.7k points) mole concept ; stoichiometry; icse; class-10; 0 votes. Method provides enhancing of platinum extraction degree. See more Platinum products. ). Calculate the percentage of KCl in the sample. An organic compound with vapour density = 94 contains C = 12.67%, H = 2013% amd Br = 85.11%. 2 x (14 + 8 ) + 195 + 6 x 35.3= 444. View Answer. Favorite Answer. A-3.1 Reagents A-3.1.1 Concentrated Sulphuric Acid - see IS : 266-19611_ ( to be used in electrolytic method only ). PtCle 1. calculate the percentage of ammonia in a sample if 0.2115g gave rise to 0.4693g platinum.? [Pt = 195, N 14, H = 1, Cl 35.5] (b) A flask contains 6.6 g of carbon dioxide. This is calcined and the impure sponge re-dissolved. The precipitate decomposes on ignition, yielding metallic platinum and gaseous products: (NH4)2PtCl6 --> Pt(s) + 2Cl2(g) + 2NH3(g) + 2HCl(g) Calculate the percentage of ammonia in a sample if 0.2115g gave rise to 0.4693g of platinum. [N= 14,H= l,Pt= 195,C1 = 35.5] 0. (N = 14, H = 1, Cl = 35.5, Pt = 195). [N = 14, H = 1, Pt = 195, Cl = 35.5] (Give your answer correct to the nearest whole number.) Calculate the percentage of sodium in sodium aluminium fluoride (Na 3 AlF 6) … Calculate : (i) The number of moles of carbon dioxide present in the flask. Store in a cool, dry place and oxidize it as the need for fresh catalyst arises. acid; the product is a slightly soluble ammonium chloroplatinate H 2 PtCl 6(aq) 2N H 4 + (aq) ( ) 2 tCl s + + + The precipitate decomposes on ignition, yielding metallic platinum and gaseous products ( NH 4) 2 PtC l 6 (s) Pt (s) + 2H 3 g) Cl 2 Calculate the percentage of ammonia in a sample if 0.2115 g gave rise to 0.4693 g of platinum. (g) (i) Calculate the percentage of platinum in ammonium chloroplatinate (NH 4)2PtCl 6 (Give your answer correct to the nearest whole number). acid; the product is a slightly soluble ammonium chloroplatinate H 2 PtCl 6(aq) 2N H 4 + (aq) ( ) 2 tCl s + + + The precipitate decomposes on ignition, yielding metallic platinum and gaseous products ( NH 4) 2 PtC l 6 (s) Pt (s) + 2H 3 g) Cl 2 Calculate the percentage of ammonia in a sample if 0.2115 g gave rise to 0.4693 g of platinum. Calculate the percentage of platinum in ammonium chloroplatinate (NH4 )2 PtCl6 (Give your answer correct to the nearest whole number). 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Chloroplatinic acid (also known as hexachloroplatinic acid) is an inorganic compound with the formula [H 3 O] 2 [PtCl 6](H 2 O) x (0 ≤ x ≤ 6). Platinum (atomic symbol: Pt, atomic number: 78) is a Block D, Group 10, Period 6 element with an atomic weight of 195.084. % NH3. The crude platinum sponge is subjected to purification to obtain 99.9%pure platinum with an overall recovery of 97.2 percent. Textbook solution for Fundamentals Of Analytical Chemistry 9th Edition Skoog Chapter 12 Problem 12.22QAP. precipitation of ammonium chloroplatinate which was then dried; at refinery C dry ammonium chloroplatinate washandled, mostly underexcellent exhaust ventilation, though where the salt was crushed this was less good, and at refinery D ammoniumchloroplatinate, after precipitation, was ignited to form spongy platinum. Find the empirical Question 1. Find the empirical formula of the compound (work to upto two decimal places). Ammoniacal nitrogen can be determined by treatment of the sample with chloroplatinic acid; the product is slightly soluble ammonium chloroplatinate: H2PtCl6 + 2NH4+ = (NH4)2PtCl6 + 2H+ The percipitate decomposes upon ignition, yielding metallic platinum and gaseous products: (NH4)2PtCl6 = Pt(s) + 2Cl2(g) + 2NH3(g) + 2HCl(g) What is the percentage of ammonium in a sample of 0.2213g … platinum solution metals ammonium acid Prior art date 1958-12-24 Legal status (The legal status is an assumption and is not a legal conclusion. Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6. What mass of AgI can be produced from a 0.512-g sample that assays 20.1% AlI3? 1 decade ago. Potassium Chloroplatinate found in: Chloroplatinate Solution, Potassium Hexachloroplatinate (IV), Potassium hexachloroplatinate(IV), >=99.9% trace.. The whole Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. What is the mass of nitrogen in 1000 kg of urea [CO(NH2 )2 ]. A-3.1.2 Ammonium Chloride - saturated solution. Find the empirical formula of the compound (work to upto two decimal places). Trevor H. Lv 7. Calculate the percentage of platinum in ammonium chloroplatinate (NH4 )2 PtCl6 (Give your answer correct to the nearest whole number). Chemistry. [N = 14, H = 1, Pt = 195, Cl =35.5] (Give your answer correct to the nearest whole number) [N = 14, H = 1, Pt = 195, Cl =35.5] (Give your answer correct to the nearest whole number) If you are looking to buy or sell platinum then it can be helpful to enter a profit/loss percentage. See more Platinum products. The precipitation of ammonium chloroplatinate from the leach liquor is achieved efficiently only when any nitrosyl complex of platinum present is decomposed by repeated treatment with hydrochloric acid. Calculate the percentage of phosphorus in the fertilizer super phosphate, Ca(h2PO4)2. (a) Calculate correct to 1 decimal place the percentage of nitrogen in ammonium chloroplatinate [(NH4)2 PtC16J. [N = 14, H = 1, Pt = 195, Cl =35.5] (Give your answer correct to the nearest whole number) Solution 2002-2. Question 2002-3. 2 x (atomic mass of N + 8 x atomic mass of H) + atomic mass of platinum + 6 x atomic mass of chlorine. It is a rare example of a soluble platinum(IV) salt that is not hygroscopic. A-3.0.1 In the gravimetric method platinum is determined after precipitation as ammonium chloroplatinate [ ( NH4 )%. Platinum is an attractive silvery white metal with a melting point of 1,774 deg C, a boiling point of 3,827 deg C and a density of 21.45 g/cu cm at room temperature. Click hereto get an answer to your question ️ A compound contains 12.67% Carbon. (ii) The number of molecules of carbon dioxide present in the flask. The precipitate decomposes on ignition, yielding metallic platinum and gaseous products: (NH 4) 2 PtCl 6 →Pt(s) + 2Cl 2 (g) + 2NH 3 (g) + 2HCl(g) Calculate the percentage of ammonia in a sample if 0.2115 g gave rise to 0.4693 g of platinum. EFFECT: improved preparing method. 9. (b) The percentage composition of sodium phosphate as determined by analysis is 42.1% sodium, 18.9% phosphorus and 39% oxygen. Platinum (atomic symbol: Pt, atomic number: 78) is a Block D, Group 10, Period 6 element with an atomic weight of 195.084. So, 100 parts will contain = 195 x 100/444 = 43.9‰ = 44‰. Determine the percentage of oxygen in ammonium nitrate (O = 16). Platinum is then precipitated from this solution as ammonium chloroplatinate. Ammoniacal nitrogen can be determined by treatment of the sample with chloroplatinic acid; the product is slightly soluble ammonium chloroplatinate: H2PtCl6+ 2NH4+ --> (NH4)2PtCl6 + 2H The precipitate decomposes on ignition, yielding metallic platinum and gaseous products: (NH4)2PtCl6 --> Pt(s) +2Cl2(g) +2NH3(g)+ 2HCl(g) Calculate the percentage of ammonia in a sample if 0.2115 g … Students also viewed these Chemical Engineering questions . (d) (i) Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6 (Give your answer correct to the nearest whole number). Calculate the percentage of platinum in ammonium chloroplatinate (NH4 )2 PtCl6 (Give your answer correct to the nearest whole number). Find its molecular formula. Find the percentage of platinum in ammonium chloroplatinate (in) 6. The crude platinum sponge is subjected to purification to obtain 99.9%pure platinum with an overall recovery of 97.2 percent. If one started with 64g of platinum coins (Pt, 195g/mole, 0.328mole), one should end up with slightly less than 0.328 mole of ammonium chloroplatinate ((NH4)2PtCl6, 443.9g/mole), or about 140g. Ammonaical nitrogen can be determined by treatment of the sample with chloroplatinic acid; the product is slightly soluble ammonium chloroplatinate: H2PtCl6 + 2NH4^+ --->(NH4)2PtCl6 + 2H^+ The precipitate decomposes on ignition,yielding metaalic platinum and gaseous products: … Ammonium hexachloroplatinate, also known as ammonium chloroplatinate, is the inorganic compound with the formula (NH 4) 2 [PtCl 6]. Calculate the percentage of platinum in ammonium chloroplatinate, (NH4)2PtCl6. Ammonium chloroplatinate is a convenient form in which to store catalyst, as platinum dioxide catalyst can be extremely pyrophorric (this stuff explodes!). products: Calculate the percentage of ammonia in a sample if 0.2115 g gave rise to 0.4693 g of platinum. 12-23 A 0.6447-g portion of manganese dioxide was added to an acidic solution in which 1.1402 g of a chloride-containing sample was dissolved. pllzz ans 2nd no link pllzz compound is czH204 PRACTICE PROBLEMS-IV I Calculate the (a) empirical formula, and (b) molecular formula of a compound having the Sodium = 42 10/0, phosphorus = 18 9% and oxygen = 39 % Given that the molecular mass of the - Chemistry - 7. Get accurate and reliable results with this specially suited sensor. (a) Calculate the percentage of platinum in ammonium chloroplatinate, (NH 4) 2 PtCl 6. Calculate the percentage of ammonia in the a sample of 0.2115 g gave rise to 0.4693 g platinum. Calculate the percentage of platinum in ammonium chloroplatinate (NH4 )2 PtCl6 (Give your answer correct to the nearest whole number). The precipitation of ammonium chloroplatinate from the leach liquor is achieved efficiently only when any nitrosyl complex of platinum present is decomposed by repeated treatment with hydrochloric acid. We have step-by-step solutions for your textbooks written by Bartleby experts! A 0.2121-g sample of an organic compound was burned in a stream of oxygen, and the CO2 produced was collected in a solution of barium hydroxide. 9. Find the empirical formula of the compound (work to upto two decimal places). Calculate the percentage of platinum in ammonium chloroplatinate (NH. Synonym: Hexachloroplatinic acid solution, Hydrogen hexachloroplatinate(IV) solution, Platinic chloride solution, Platinum(IV) chloride solution Linear Formula: H 2 PtCl 6 Molecular Weight: 409.81 …free fatty acid content of edible oils. Synonym: Hexachloroplatinic acid solution, Hydrogen hexachloroplatinate(IV) solution, Platinic chloride solution, Platinum(IV) chloride solution Linear Formula: H 2 PtCl 6 Molecular Weight: 409.81 The percentage of platinum in ammonium chloroplatinate (NH4)2PtCl6 is : [ N = 14, H = 1, Cl = 35.5, Pt = 195 ] [N = 14, H = 1, Pt = 195, Cl =35.5] (Give your answer correct to the nearest whole number) (g) (i) Calculate the percentage of platinum in ammonium chloroplatinate (NH 4)2PtCl 6 (Give your answer correct to the nearest whole number). Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6 (Give your answer correct to the nearest whole number). Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. (N = 14, H = 1, Cl = 35.5, Pt = 195) The number of electrons in each of platinum's shells is [2, 8, 18, 32, 17, 1] and its electron configuration is [Xe] 4f 14 5d 9 6s 1. 2 cl, 1 tbl, 2 ex . F. BASED ON EMPIRICAL FORMULA AND MOLECULAR FORMULA . See more Platinum products. Calculate the percentage of platinum in ammonium chloroplatinate (NH4)2PtCl6. Find the empirical formula of the compound. Synonym: Hexachloroplatinic acid solution, Hydrogen hexachloroplatinate(IV) solution, Platinic chloride solution, Platinum(IV) chloride solution Linear Formula: H 2 PtCl 6 Molecular Weight: 409.81 Calculate the percentage of carbon in the sample if 0.6006 g of BaCO3 was formed. (a) Calculate correct to 1 decimal place the percentage of nitrogen in ammonium chloroplatinate [(NH4)2 PtC16J. Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6. Related Search: platinum ii chloride fruit cane yellow sapphire ring for women. (ii) The percentage composition of sodium phosphate as determined by analysis is 42.1% sodium, 18.9% Phosphorus and 39% oxygen. To use the platinum calculator simply select the weight unit, select the platinum purity, enter the weight of your platinum item, and then click the calculate button. Calculate the percentage of platinum in ammonium chloroplatinate (NH 4) 2 PtCl 6. (b) The percentage composition of sodium phosphate as determined by analysis is 42.1% sodium, 18.9% phosphorus and 39% oxygen. The percentage composition of sodium phosphate, as determined by analysis is: 42.1% Na, 18.9% P, 39% of O. 2.15% Hydrogen and 85.18% Bromine. Alibaba.com offers 828 ammonium chloroplatinate products. (N = 14, H = 1, Cl = 35.5, Pt = 195) Answer: 2005. Calculate the percentage of ammonia in a sample if 0.2490 g gave rise to 0.4943 g of platinum. 0.4693(1/(14+1+1+1))= 0.0276 0.0276(2)(159)= 8.778 8.778/0.2115= 41.5% The molar mass of ammonium dichromate is "252.06 g/mol" To calculate the molar mass of a compound, you multiply the subscripts of each element times its molar mass (atomic weight in g/mol). "(NH"_4)_2"Cr"_2"O"_7" When there is no written subscript, it is understood to be 1. Calculate the percentage of nitrogen in aluminium nitride. [H =1, N =14, Na = 23, P = 31, Cl = … A gaseous … [N = 14, H = 1, Pt = 195, Cl =35.5] (Give your answer correct to the nearest whole number), Molecular formula of ammonium chloroplatinate (NH4)2PtCl6 :2 x (atomic mass of N + 8 x atomic mass of H) + atomic mass of platinum + 6 x atomic mass of chlorine2 x (14 + 8 ) + 195 + 6 x 35.3= 444444 parts of ammonium chloroplatinate contains 195 parts by weight of platinumSo, 100 parts will contain = 195 x 100/444 = 43.9‰ = 44‰. 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Accuracy of the compound ( work to upto two decimal places ) 12 ] ( answer to the nearest number. Places ) result in 1 mol Pt ( i ) the number of molecules of carbon dioxide present in flask! Cl, its solubility is only 0.0028 g/100 mL makes no representation as to the nearest number... Added to precipitate the pure platinum with an overall recovery of 97.2 percent to 0.4693 g platinum. Pt 195... 12, H = 1, Cl = 35.5, Pt = )... Solution as ammonium chloroplatinate is precipitated from chloroplatinic acid solution with excess of hydrochloric.. A cool, dry place and oxidize it as the need for fresh catalyst.... A sample if 0.2115 g gave rise to 0.4693 g platinum. work to upto two decimal places ) by!