Question

What is the effect of high enthalpy of H-H bond in terms of chemical reactivity of dihydrogen?

Answer 1

The ionization enthalpy of H-H bond is very high (1312 kJ mol-1). This indicates that hydrogen has a low tendency to form H+ions. Its ionization enthalpy value is comparable to that of halogens.

Answer 2

Hey dear,

◆ Explanation -

- Dihydrogen contains two hydrogen atoms bonded together by H-H bond.

- Enthalpy of this H-H bond is high which suggests its hard to break.

- If the bond doesn't break, H2 can't dissociate into H+ ions. Thus H2 is relatively inert.

- Therefore, high enthalpy of H-H bond in dihydrogen suggests that its reactivity is very low.

Hope this helped. Thanks for asking..