1.

Alkyl halides undergo nucleophilic substitution reactions in which halogen atom is replaced by other atom. RX + Nu:^(-) to Nu-R + X^(-) These reactions follow S_(N)1 and S_(N)2 type mechanism, in which S_(N)1 takes place in two steps while S_(N)2 takes place in single step. Due to their tendency to undergo substitution by a large number of nucleophiles, they form a variety of products. In which of the following pairs, the first nucleophile is stronger?

Answer»

`Cl^(-), I^(-)`
`CH_(3)OH, CH_(3)S^(-)`
`(CH_(3)CH_(2))_(2)NH, (CH_(3)CH_(2))_(3)N`
`(CH_(3))_(2)O, (CH_(3))_(3)N`

ANSWER :C


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