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A colourless crystalline compond has the following percentage composition.sulphur 24.24%,nitrogen 21.21,% ,hydrogen 6.06%,and the rest is oxygen.detrrmine the empirical formula of compound.if the molecular mass is 132 what is the molecular formula of the compound?
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A colourless crystalline compond has the following percentage composit...
Percentage Composition and Empirical Formula
Molecular Formula
- Given percentage composition of colourless crystalline compound
- Sulphur: 24.24%
- Nitrogen: 21.21%
- Hydrogen: 6.06%
- Oxygen: rest
- To find empirical formula, we need to determine the ratio of atoms present in the compound
- Assuming 100 g of the compound, mass of each element can be calculated
- Sulphur: 24.24 g
- Nitrogen: 21.21 g
- Hydrogen: 6.06 g
- Oxygen: 100 - (24.24 + 21.21 + 6.06) = 48.49 g
- Next, convert mass of each element into moles
- Sulphur: 24.24 g / 32.06 g/mol = 0.755 mol
- Nitrogen: 21.21 g / 14.01 g/mol = 1.514 mol
- Hydrogen: 6.06 g / 1.01 g/mol = 6.0 mol
- Oxygen: 48.49 g / 16.00 g/mol = 3.031 mol
- Divide each mole value by the smallest mole value to get the ratio of atoms
- Sulphur: 0.755 mol / 0.755 mol = 1
- Nitrogen: 1.514 mol / 0.755 mol = 2
- Hydrogen: 6.0 mol / 0.755 mol = 8
- Oxygen: 3.031 mol / 0.755 mol = 4
- The empirical formula of the compound is therefore SNO2H8
Molecular Formula
- The molecular mass of the compound is given as 132
- The empirical formula mass can be calculated by adding the atomic masses of the elements in the empirical formula
- SNO2H8: (32.06 + 14.01 + 16.00x2 + 1.01x8) g/mol = 121.15 g/mol
- To find the molecular formula, divide the molecular mass by the empirical formula mass
- 132 g/mol / 121.15 g/mol = 1.09
- Rounding to the nearest whole number, the molecular formula of the compound is S2N4O8H16
Community Answer
A colourless crystalline compond has the following percentage composit...
SN2H8O4
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A colourless crystalline compond has the following percentage composition.sulphur 24.24%,nitrogen 21.21,% ,hydrogen 6.06%,and the rest is oxygen.detrrmine the empirical formula of compound.if the molecular mass is 132 what is the molecular formula of the compound?
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A colourless crystalline compond has the following percentage composition.sulphur 24.24%,nitrogen 21.21,% ,hydrogen 6.06%,and the rest is oxygen.detrrmine the empirical formula of compound.if the molecular mass is 132 what is the molecular formula of the compound? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A colourless crystalline compond has the following percentage composition.sulphur 24.24%,nitrogen 21.21,% ,hydrogen 6.06%,and the rest is oxygen.detrrmine the empirical formula of compound.if the molecular mass is 132 what is the molecular formula of the compound? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A colourless crystalline compond has the following percentage composition.sulphur 24.24%,nitrogen 21.21,% ,hydrogen 6.06%,and the rest is oxygen.detrrmine the empirical formula of compound.if the molecular mass is 132 what is the molecular formula of the compound?.
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