An ideal gaseous mixture of ethane $(C_{2} H_{6})$ and ethene $(C_{2} H_{4})$ occupies 28 litre at 1 atm and 273 K. The mixture reacts completely with 128 gm to produce $O_{2}$ and $H_{2} O$ . Mole fraction of $C_{2} H_{6}$ in the mixture is :

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

0.6

0.8

0.5

0.4

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

We have

$\begin{aligned} C_{2} H_{6} + \frac{7}{2} O_{2} \to 2 {CO}_{2} + 3 H_{2} O \\ C_{2} H_{4} + 3 O_{2} \to 2 {CO}_{2} + 2 H_{2} O \\ \frac{\frac{7 V}{2} + 3 (28 - V)}{22.4} = \frac{128}{32} \\ V = 11.2 \\ X_{C_{2} H_{6}} = \frac{11.2}{28} = 0.4 \end{aligned}$

An ideal gaseous mixture of ethane $(C_{2} H_{6})$ and ethene $(C_{2} H_{4})$ occupies 28 litre at 1 atm and 273 K. The mixture reacts completely with 128 gm to produce $O_{2}$ and $H_{2} O$ . Mole fraction of $C_{2} H_{6}$ in the mixture is :0.4.