BITSAT 2017 Slot 2 Solved Paper

% for CO2
∵0.765g of acid gives CO2=0.535g
∴100g of acid gives CO2=

0.535×100

0.765

% of CO2=70.00
% for carbon
∵44g of CO2 gives, C=12g
∴70g of CO2 gives, C=

12×70

44

=19.09g
∴% of carbon =19.00
Similarly,
(i) for hydrogen
% of H2O
⇒

0.138×100

0.765

=18.03=18.00
% of Hydrogen
⇒

2×18

18

=2.00
Hence ratio of carbon and hydrogen is 19:2