Question

Which of the following has the highest degree of ionisation?

• A. $1MN{H}_3$
• B. $0.001MN{H}_3$
• C. $0.11MN{H}_3$
• D. $0.0001MN{H}_3$

Answer 1

The correct option is D $0.0001MN{H}_3$

$0.0001MN{H}_3$ has the highest degree of ionisation. With increase in dilution ( or decresae in concentration), the degree of ionisation increases.

The he degree of ionisation $\alpha \propto \text{Dilution}$
$\alpha \propto \frac{1}{\text{concentration}}$
$\alpha$ is maximum at infinite dilution.