Question

If relative molecular mass of butane \[(\mathrm{C_4H_{10}})\] is 58, then its vapour density will be ______.

Options

• 5

• 29

• 32

• 16

Answer 1

If relative molecular mass of butane \[(\mathrm{C_4H_{10}})\] is 58, then its vapour density will be 29.

Explanation:

Relative molecular mass is twice the vapour density, so \[\text{Vapour density}=\frac{58}{2}=29\]. The other values do not satisfy this relationship.