Q.

The molar entropies of

 HI(g),H(g),I(g)  at  298  k  are  206.5,114.6  and  180.7  J  mol1  k1 respectively. Using the G0  given below. Calculate the bond energy of  HI (Round of to nearest integer)
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answer is 298.

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Detailed Solution

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S0=206.5+114.6+180.788.8G0=H0TS0H0=271.8+298×88.8×1013=298.3

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