The reaction CH 4 ( g ) + Cl 2 ( g ) ⟶ CH 3 Cl ( g ) + HCl ( g ) has Δ H = − 25 kCal . From the given data, what is the bond energy of Cl − Cl bond

Question

The reaction CH 4 ​ ( g ) + Cl 2 ​ ( g ) ⟶ CH 3 ​ Cl ( g ) + HCl ( g ) has Δ H = − 25 kCal . From the given data, what is the bond energy of Cl − Cl bond

TestHub · Accepted Answer

− 25 × 1 0 3 c a l = + E C − H ​ + E Cl − Cl ​ − ( E C − Cl ​ + E H − Cl ​ ) = x + y − ( 84 × 1 0 3 + 103 × 1 0 3 ) cal x + y = 162 × 1 0 3 cal 5 9 ​ y + y ; y = ( 1 + 5 9 ​ ) 162 × 1 0 3 ​ cal ⇒ (D)

Chemistry - Thermochemistry Question with Solution | TestHub

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