Statement I is incorrect. The reaction of propene with diborane (B2H6) yields a trialkyl borane, specifically (CH3)2CH-B. Subsequent oxidation with hydrogen peroxide in NaOH produces propan-2-ol. The formula presented in Statement I does not represent the correct addition product; the initial addition product is a trialkyl borane.
Statement II is correct. Propan-2-ol is formed through the oxidation of the trialkyl borane using H2O2 in NaOH. This process is known as the hydroboration-oxidation reaction.
The correct order of the rate of reaction of the following reactants with nucleophile by \( \mathrm{S_N1} \) mechanism is:
(Given: Structures I and II are rigid) 