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The correct order of decreasing acidic n...

The correct order of decreasing acidic nature of `H_(2)O, ROH, HC -= CH` and `NH_3)` is

A

`CH -= CH gt H_(2)O gt ROH gt NH_(3)`

B

`H_(2)O gt ROH gt NH_(3)`

C

`ROH gt NH_(3) gt CH -= CH gt H_(2)O `

D

`H_(2)O gt ROH NH_(3) gt CH -= CH `

Text Solution

Verified by Experts

The correct Answer is:
B
`{:("Compound",pK_(a)),("ROH",(16-18)),(H_(2)O,14),(NH_(3),4.75(pK_(b))),(HC-=CH,26):}`
Smaller the `pK_(a)` stronger the acid .
` :. ` The order of decreasing acidic nature is
`H_(2)O gt ROH gt HC-= CH gt NH_(3)`
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