Question

32. The dissociation energy of CH4 (g) is 360 kcal mol-1
and that of C6 H6 (g) is 620 kcal mol-1. The C-C bond
energy is
(1) 260 kcal mol-1 (2) 180 kcal mol-1
(3) 130 kcal mol-1 (4) 80 kcal mol-1
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Answer 1

Answer:

We are given dissociated energy of CH4 = 360

Since,  has 4 CH bonds.

Dissociated energy of 1 CH bond = 360 ÷ 4 = 90

The dissociation energy of  = 620

Where  has 1 C-C bond and 6 CH bonds.  

So, we can calculate the dissociated energy of 1 C-C bond by:

C-C bond + 6CH bond = 620

C-C bond + (6 × 90) = 620

C-C bond + 540 = 620

C-C bond = 620 - 540 = 80

Explanation:

Answer 2

Answer:

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