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1 st Year : Unit 6.2 (Thermo Dynamics ) - Thermodynamics-2

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If at 298K the bond energies of C - H, C - C, C = C and H - H bonds are respectively 414, 347, 615 abd 435 kJmol^-1 , the value of enthaply change for the reaction
H₂C = CH₂(g)+ H₂(g)→H₃C - CH₃(g) at 298 K will be

A. - 250 kJ

B. + 125 kJ

C. - 125 kJ

D. - 125 kJ

E. None of the above

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Correct choice: C

Explanation:

None

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Eamcet Chemistry 1 st Year : Unit 6.2 (Thermo Dynamics ) - Thermodynamics-2

Eamcet Chemistry
1 st Year : Unit 6.2 (Thermo Dynamics ) - Thermodynamics-2