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Standard XII

Chemistry

Electrophile

What will be ...

Question

What will be delta H for the reaction CH2Cl2 gives C + 2H + 2Cl? (B.E. of C-H and C-Cl bonds 416 kJmol-1 and 325 kJmol-1 respectively) a)832 kJ b)1482 kJ c)650 kJ d)1855 kJ

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Similar questions

Q. What will be

Δ H

for the reaction,

C H_{2} C l_{2} \to C + 2 H + 2 C l

?
(B.E. of C - H and C - Cl bonds are 416 kJ

m o l^{- 1}

and 325 kJ

m o l^{- 1}

respectively)

Q. What is the

Δ H

of the reaction ?
The average bond energies of

C - C l

bond and

C - H

bond are

416 k J

and

325 k J {m o l}^{- 1}

respectively.

Q. Calculate

△ H_{r}^{o}

for the reaction

C H_{2} C l_{2} (g) \to C (g) + 2 H (g) + 2 C l (g) .

The average bond enthalpies of C - H and C - Cl bonds are

414 k J m o l^{- 1}

and

330 k J m o l^{- 1} .

For the reaction $H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (l), Δ H = - 285.8 k J m o l^{- 1} Δ S = - 0.163 k J m o l^{- 1} K^{- 1}$ . What is the value of free energy change $27^{\circ} C$ for the reaction.

Q. Calculate the bond energy of

C l - C l

bond from the following data:

C H_{4 (g)} + C l_{(g)} \to C H_{3} C l_{(g)} + H C l_{(g)}; Δ H = - 100.3 k J

. Also the bond enthalpies of

C - H, C - C l, H - C l

bonds are

413, 326

and

431

k J m o l^{- 1}

respectively.

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