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Is the addition of H-Br to an alkene entropically favored or disfavored? Explain why.

Is the addition of H-Br to an alkene entropically favored or disfavored? Explain why.
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Answer #1

The reaction between an alkene and HBr is an electrophilic addition reaction

R- CH = CH2 + H-Br R-CH(Br)-CH3

Here the number of moles of product is less than that of reactants (ng  = 1 - 2 = -1)

We know entropy is the measure of randomness or disorderdness. A reaction is favoured when there is an increase in entropy. Here number of moles are decreasing and hence the reaction is entropically disfavoured

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