The empirical formula of a compound is $$C{H_2}{O_2}.$$ What could be its molecular formula ?
A.
$${C_2}{H_2}{O_2}$$
B.
$${C_2}{H_2}{O_4}$$
C.
$${C_2}{H_4}{O_4}$$
D.
$$C{H_4}{O_4}$$
Answer :
$${C_2}{H_4}{O_4}$$
Solution :
Since empirical formula is multiplied by $$n$$ to get molecular formula, $${\left( {C{H_2}{O_2}} \right)_n}$$ where $$n = 1,2,3,...$$ etc.
Hence, among the given options $$C{H_2}{O_2}$$ will give only $${C_2}{H_4}{O_4}$$ as its molecular formula.
Releted MCQ Question on Physical Chemistry >> Some Basic Concepts in Chemistry
Releted Question 1
$$27 g$$ of $$Al$$ will react completely with how many grams of oxygen?