Quantitative Analysis of Organic Compounds
Chemistry ⇒ Carbon and Organic Chemistry
Quantitative Analysis of Organic Compounds starts at 11 and continues till grade 12.
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A 0.2 g sample of an organic compound gave 0.3 g of AgBr in the estimation of bromine. Calculate the percentage of bromine in the compound.
A 0.25 g sample of an organic compound gave 0.44 g of CO2 and 0.18 g of H2O on combustion. Calculate the percentage of carbon in the compound.
A 0.3 g sample of an organic compound containing nitrogen was digested by Kjeldahl’s method. The ammonia evolved required 25 mL of 0.1 N H2SO4 for neutralization. Calculate the percentage of nitrogen in the compound.
A 0.4 g sample of an organic compound gave 0.5 g of AgCl in the estimation of chlorine. Calculate the percentage of chlorine in the compound.
A 0.5 g sample of an organic compound gave 0.7 g of BaSO4 in the estimation of sulphur. Calculate the percentage of sulphur in the compound.
A compound contains 54.5% carbon, 9.1% hydrogen, and 36.4% oxygen. Find its empirical formula.
Describe the role of silver nitrate in the estimation of halogens by Carius method.
Explain why a combustion tube is used in the estimation of carbon and hydrogen.
Explain why copper oxide is used in the Dumas method.
Explain why oxygen is not usually estimated directly in organic compounds.
In the estimation of halogens, why is nitric acid used instead of hydrochloric acid?
Name the compound formed when hydrogen in an organic compound is oxidized during quantitative analysis.
State the difference between empirical formula and molecular formula.
State the main difference between the Dumas and Kjeldahl methods for nitrogen estimation.
State the principle of the Dumas method for nitrogen estimation.
The percentage of carbon in an organic compound can be determined by which method?
What is the empirical formula of a compound containing 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?
