Question

The empirical formula and molecular mass of a compound are CH2O and 160 g respectively. What will be the molecular formula of the compound?

Answer 1

Question:

• The empirical formula and molecular mass of a compound are CH2O and 180 g respectively. What will be the molecular formula of the compound?

Answer:

• C6H12O6.

Explanation:

Given :

• Empirical formula = CH_2O
• Molecular mass = 180g

To find :

• Molecular formula.

Solution :

Empirical formula CH_2O weight :

= 12 + 2(1) + 16

= 12 + 2 + 16

∴ 30g

Molecular mass of CH_2O :

= 180g

n = Mol.Mass/Emp.Mass

= 180/30

∴ 6

Molecular formula = n(E.F)

= n(CH_2O)

= 6(CH_2O)

∴ C_6H_12O_6

∴ C6H12O6 is the M.F