810 1 Typical complex reactions 10.1.2 Competing reaction/Parallel reaction a-x)=aexp[-(k, +k,)t k, y {1-exp-(k1+k2) k1+k2 1-exp[-(K, +k2)t] k1+k2 B k selectivity of the reaction( ) exp[ ( ) ] 1 2 a − x = a − k + k t {1 exp[ ( ) ]} 1 2 1 2 1 k k t k k k a y − − + + = 2 1 k k z y = selectivity of the reaction {1 exp[ ( 1 2 ) ]} 1 2 2 k k t k k k a z − − + + = A B C t c §10.1 Typical complex reactions 10.1.2 Competing reaction/Parallel reaction