Question

Empirical formula of a compound is $C{H}_{2}O$ . If its molecular weight is 180, then the molecular formula of the compound is ?

• A. $C_6{H}_{12}{O}_6$
• B. $C_5{H}_{10}{O}_5$
• C. $C_3{H}_6{O}_3$
• D. $C_4{H}_8{O}_4$

Answer 1

The correct option is A $C_6{H}_{12}{O}_6$

Let's find the Molar mass of Carbon$=12$.

Molar mass of Hydrogen$=1$.

Molar mass of Oxygen$=16$.

Mass of $C{H}_{2}O=12+2\left(1\right)+16=30$.

Molecular weight of compound given is $180$.

So, the molecular weight is $\frac{180}{30}=6$.

$\Rightarrow$ Molecular formula of compound is $C_6{H}_{12}{O}_6$.