All India Engineering / Architecture Entrance Examination (AIEEE) CBSE Guess > AIEEE > AIEEE Papers > 2007 > Chemistry AIEEE 2007 Chemistry Q. 1. The energies of activation for forward and reverse reactions for
Sol: Enthalpy change of a reaction is not affected by the presence of a catalyst as it lowers the activation energy of the forward and reverse reaction by the same amount Q. 2. The cell,
Sol: Correct choice: (3) Q. 3. The pKa of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is
Sol: If the given weak acid is 50% ionized, then its conjugate base will have the concentration same as that of weak acid. Correct choice: (3) |
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