Question

Based on the structure shown, what is the empirical formula for this compound?

• A. $CHO$
• B. $C_2{H}_3{O}_3$
• C. $C_2{H}_3{O}_4$
• D. $C_3{H}_6{O}_6$
• E. $C_4{H}_6{O}_6$

Answer 1

The correct option is B $C_2{H}_3{O}_3$

Based on the structure the empirical formula for this compound is : $C_2{H}_3{O}_3$.
Note: From the given structure, we can say that we have 4 $C$ atoms, 6 $O$ atoms and 6 $H$ atoms. Hence, the molecular formula is $C_4{H}_6{O}_6$. To obtain the empirical formula, divide the molecular formula by 2 to obtain $C_2{H}_3{O}_3$.