1.

An exothermic reaction A rarr Bhas an activation energy of 17 kJ per mole of A . The heat of reaction is 40 kJ . The activation energy for the reverse reaction B rarr Ais

Answer»

23 KJ
97 kJ
57 kJ
17 kJ

SOLUTION :(C ) For exothermic REACTION
`E_(a)` (BACKWARD ) `= E_(a) ` (forward) + Heat of reaction ( magnitude only ) =17+40=57 kJ


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