2) A compound contains C,H, N and 0. A sample of 1.735 gram of the compound when burnt gave
4.415 gram of carbon dioxide and 0.904 gram of water. A second sample of the compound
weighing 1.438 gram when decomposed gave 0.166 gram of nitrogen. What is the empirical
formula of the compound?
Answers
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Explanation:
% of C=
44
12
×
Weight of compound
Weight ofCO
2
×100
=
44×0.45
12×1.1×100
=66.66%
% of H=
18
2
×
Weight of compound
Weight ofH
2
O×100
=
18×0.45
2×0.3×100
=7.4%
% of N=[100−(66.66+7.4)]=25.93%
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