A compound has the empirical formula CH2O . Its vapour density is 30. Its molecular formula is

Question

A compound has the empirical formula CH2O . Its vapour density is 30. Its molecular formula is (A) C 2 H 4 O 2 (B) C 2 H 6 O (C) C 2 H 6 O 2 (D) C 2 H 4 O

Tardigrade Admin · Accepted Answer

2 × vapour density = molecular weight 2 × 30=60 ∴ Molecular weight of compound =60 (Empirical formula) × n= molecular formula (12+1 × 2+16) × n=60 ∴ n=2 so, ( CH 2 O ) × 2= molecular formula ∴ Molecular formula = C 2 H 4 O 2

Q. A compound has the empirical formula $C H_{2} O$ . Its vapour density is $30$ . Its molecular formula is

$C_{2} H_{4} O_{2}$

$C_{2} H_{6} O$

$C_{2} H_{6} O_{2}$

$C_{2} H_{4} O$

Q. A compound has the empirical formula CH2​O . Its vapour density is 30. Its molecular formula is

C2​H4​O2​

C2​H6​O

C2​H6​O2​

C2​H4​O

2× vapour density = molecular weight 2×30=60 ∴ Molecular weight of compound =60 (Empirical formula) ×n= molecular formula (12+1×2+16)×n=60 ∴n=2 so, (CH2​O)×2= molecular formula ∴ Molecular formula =C2​H4​O2​

Q. A compound has the empirical formula $C H_{2} O$ . Its vapour density is $30$ . Its molecular formula is

$C_{2} H_{4} O_{2}$

$C_{2} H_{6} O$

$C_{2} H_{6} O_{2}$

$C_{2} H_{4} O$