Question

A gaseous mixture contains equal mass of CH4 and SO2 gas. The mole fraction of SO2 in the mixture is​

Answer 1

Answer:

4/5

Explanation:

Answer 2

Given:

A gaseous mixture with equal masses of CH₄ and SO₂.

Let it be m

To find:

Mole fraction of SO₂

Solution:

Mole fraction of a component gives the ratio of the number of moles of that component to the total number of moles present in that mixture.

Mole fraction of A= $\frac{No. of moles of A}{Total no. of moles}$

According to the question, the mixture has only two components.

So, The mole fraction of SO₂= $\frac{No. of moles of SO_2}{No. of moles of SO_2 + No. of moles of CH_4}$

Calculating number of moles:

Number of moles of CH₄ =$\frac{Given mass}{Molar Mass}$

= m/16

Similarly, the number of moles of SO₂= m/64

Applying the formula,

The mole fraction of SO₂= $\frac{m/64}{m/64 + m/16}$

= m/ (m+4m)

= 1/5

= 0.2

Hence, the mole fraction of SO2 in the mixture is​ 0.2