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The pka of cyclopentadiene is found to be 16 while
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Answer #1

Greater the pKa value , weaker is the acid.

Thus, cycloheptatriene is less acidic than cyclopentadiene

It is so because, cycloheptatriene is aromatically stable and thus doesnot have a tendency to loose proton while cyclopentadiene is a normal alkene which is unsaturated and is in need of the electron.

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