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Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g?
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Percentage purity of potassium chlorate when impure 4.9g of it heated ...
Calculation of Percentage Purity of Potassium Chlorate
Given Data:
- Mass of impure potassium chlorate = 4.9 g
- Mass of oxygen produced = Mass of impure potassium chlorate - Mass of residue
- Mass of residue = 0.32 g
Formula:
- Percentage purity = (Pure substance/Impure substance) x 100
- Moles of pure substance = Moles of impure substance x (Pure substance/Impure substance)
- Moles of impure substance = Mass of impure substance/Molar mass of impure substance
- Molar mass of potassium chlorate = 122.55 g/mol
Calculation:
- Moles of impure potassium chlorate = 4.9 g/122.55 g/mol = 0.0399 mol
- Mass of pure oxygen = Mass of impure potassium chlorate - Mass of residue = 4.9 g - 0.32 g = 4.58 g
- Moles of pure oxygen = 4.58 g/32 g/mol = 0.143 mol
- Moles of pure potassium chlorate = Moles of impure potassium chlorate x (Pure substance/Impure substance) = 0.0399 mol x (0.143 mol/0.0399 mol) = 0.143 mol
- Mass of pure potassium chlorate = Moles of pure potassium chlorate x Molar mass of potassium chlorate = 0.143 mol x 122.55 g/mol = 17.6 g
- Percentage purity of potassium chlorate = (Pure substance/Impure substance) x 100 = (17.6 g/4.9 g) x 100 = 359.18%
Answer:
The percentage purity of potassium chlorate is 359.18%.
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Percentage purity of potassium chlorate when impure 4.9g of it heated ...
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Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g?
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Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g?.
Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Percentage purity of potassium chlorate when impure 4.9g of it heated to give oxygen whose mass is reduced by 0.32g?.
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