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The rate constants for decomposition of acetaldehyde have been measured over the temperature range 700 - 1000   K . The data has been analysed by plotting lnk vs 10 3   T graph. The value of activation energy for the reaction is kJmol - 1 . (Nearest integer) (Given : R = 8 . 31   J K - 1   mol - 1 )

Correct answer

0

Step-by-step solution

k = Ae - E a RT lnk = lnA - E a RT lnk = lnA + - E a 1000 R 1000 T Slope = - E a 1000 R = - 18 . 5 E a = 18 . 5 × 1000 × 8 . 31 = 153 . 735 × 10 3   J = 154   KJ

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