0765 g of an acid gives 0 535 g of CO2 and 0 138 g of H2O Then the ratio of the percentage of carbon and hydrogen is
(A) 192
(B) 18 11
(C) 2017
(D) 1 7
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Explanation:
ANSWER
%C=
44
12
×
mass of compound
mass of CO
2
×100
=
44
12
×
0.765
0.535
×100
%C=19.07%
%H=
18
2
×
Massof compound
Mass of H
2
O
×100
=
18
2
×
0.765
0.138
×100
H=2.00%
Therefore, ratio of C & H =
2
19
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