Chemistry - Mole Concept Question with Solution | TestHub

Question Explanation: Find molar mass of acid.

Concept: This question is based on Principal of atom conservation.

Solution:

$\mathrm{AgA}\to \mathrm{Ag}$

$1\times {\mathrm{n}}_{\mathrm{AgA}}=1\times {\mathrm{n}}_{\mathrm{Ag}}$

$\frac{0.8}{108+\mathrm{A}}=\frac{0.5175}{108}\Rightarrow \mathrm{A}=59$

$(\mathrm{A}+\mathrm{H})=$ Molar mass of acid $=60$

Final Answer: The correct option is (B).