Edexcel IAL Chemistry AS 10.13 C–X bond enthalpy and reactivity
Edexcel IAL Chemistry AS 10.13 C–X bond enthalpy and reactivity
Compare C–Cl, C–Br and C–I strengths directly: the weaker lower-enthalpy bond breaks more readily, so the iodoalkane hydrolyses fastest.
How this is tested
- Rank hydrolysis as iodoalkane faster than bromoalkane faster than chloroalkane.
- Justify the order using decreasing C–X bond enthalpy rather than polarity or solubility.