Why peroxide effect is not observed in addition of HCl and HI ? Addition of HCl and HI to unsymmetrical alkenes . Share with your friends Share 0 veena Vasandani answered this Kindly refer to the following links: https://www.meritnation.com/ask-answer/question/urgent-is-peroxide-effect-observed-only-for-hbr-not-hc/chemistry/7386671https://www.meritnation.com/ask-answer/question/anti-markovnikov-rule-is-only-applicable-to-hbr-and-not-hcl/hydrocarbons/6835785 1 View Full Answer