Complete combustion of 750g of an organic compound provides 420 g of CO2 and 210 g of H2O.
The percentage composition of carbon and hydrogen in organic compound is 15.3 and _________ respectively. (Round off to the nearest Integer).
Complete combustion of 750g of an organic compound provides 420 g of CO2 and 210 g of H2O.
The percentage composition of carbon and hydrogen in organic compound is 15.3 and _________ respectively. (Round off to the nearest Integer).
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1 Answer
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Moles of carbon in organic compound = Moles of carbon in CO?
n_c = 420 / 44 moles
Mass of carbon in organic compound = (420 / 44) × 12 = 114.54 g
Moles of hydrogen in compound = 2 × moles of H? O
n_H = 2 × (210 / 18) moles
Mass of hydrogen = 2 × (210 / 18) g = 23.33 g
% of H = (23.33 / 750) × 100 = 3.11%
The nearest integer is 3.
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