The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of `CO_(2)` The acid is a dibasic acid and 0.5 g of its silver salt leaves on ignition -.355 g of silver.
The percentage of carbon in the compound is

Options

A. 50
B. 52
C. `26.6`
D. 90

Answer

C

Explanation

% of `C=("wt. of "CO_(2))/("cot. Of compound").(12)/(44).100`
`=(0.195)/(0.2).(12)/(44).100=26.59 %`