Question

Which of the following has same empirical and molecular formula ? * a. NaCl b. C₂H₂ c. N₂O₄ d. C₆H₆ ​

Answer 1

Explanation:

Empirical formula of Glucose C

6

H

12

O

6

= C

1

H

2

O

1

Now, Empirical formula of CH

3

COOH=C

1

H

2

O

1

As empirical formula is the simplest whole number ratio of number of different types of atoms present in the given molecular formula.

Answer 2

Answer:

$NaCl$ has the same molecular and empirical formula.

Explanation:

The molecular formula is the representation of all the atoms in a compound or molecule.

The empirical formula is the shortest representation of the atoms present in a compound or molecule.

a) In Sodium Chloride (NaCl), there was only a single atom of sodium and a single atom of chlorine. So, both the empirical and molecular formula were same.

b) In Acetylene $(C_{2}H_{2} )$ there were two carbon and two hydrogen atoms in the molecular formula, whereas the empirical formula of acetylene is $CH$.

C) In Dinitrogen tetraoxide $(N_{2}O_{4} )$, there were two nitrogen and four oxygen atoms in the molecular formula, whereas the empirical formula is $NO_{2}$.

d) In Benzene $(C_{6}H_{6} )$, there were six carbon and six hydrogen atoms in the molecular formula, whereas the empirical formula is $CH$.

Hence, $NaCl$ has the same molecular and empirical formula.