Question

Which of the following properties will differ while isotopes of hydrogen are involved in the reaction?

• A. Rates of reaction
• B. Equilibrium constants
• C. Activation energy
• D. All the above

Answer 1

The correct option is D All the above

Isotopes of hydrogen have almost similar chemical properties and different physical properties. Certain chemical properties in which they differ are as follows:
1. Rate of the reaction
2. Equilibrium constants , for example$H_2$ is more easily adsorbed than $D_2$ on activated charcoal
3. Reaction between $H_2$ and $C{l}_2$ is more than 13 times faster than between $D_2$ with $C{l}_2$, as the activation energy of $H_2$ is much less than $D_2$
4. Electrolysis of $H_{2}O$ occurs more rapidly as compared to $D_{2}O$(heavy water)