Why Does C6H5CH(Cl)CH3 < (CH3)3 CCl < C6H5C(CH3)2 Cl Undergo SN1 Reaction?

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The discussion focuses on the reactivity of three compounds in SN1 reactions, establishing the order as C6H5CH(Cl)CH3 < (CH3)3CCl < C6H5C(CH3)2Cl. The compound (CH3)3CCl is the most reactive due to the stabilization of the carbocation by three electron-donating groups. In contrast, the phenyl group is considered an electron-withdrawing group, which increases the positive charge on the carbocation, making it less stable. There is confusion regarding the phenyl group's inductive effects, with clarification needed on its role in stabilizing or destabilizing the carbocation. Understanding these electronic effects is crucial for predicting the outcomes of SN1 reactions.
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i was told that the the ascending order of the compound undergo SN1 reaction is C6H5CH(Cl)CH3 < (CH3)3 CCl < C6H5C(CH3)2 Cl... it's a past year question . I am sure tha ans is correct. Can someone explain why? Generally , the most reactive is the compound (CH3)3 CCl , Am i right? this is because the (CH3)3 C+ is surrounded by three electron donating group , so it stabilise the carbonium ion formed.btw , the phenyl is an electron withdawing group , it draw the elctrons away form the C atoms , making the partial positive charge of the carboium ion formed more higher...

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i was told that the phenyl exerts positive inductive effect? why the phenyl isn't exerts negative inductive effect?
 

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