Physical properties of phenol - class-XII

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Question 1 of 7

Unlike phenol, 2,4-dinitrophenol is soluble in sodium carbonate solution in water because ?

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presence of two - $NO _2$ groups in the ring makes 2 , 4 - dinitrophenol a stronger acid than phenol.

presence of two - $NO _2$ groups in the ring makes 2 , 4 - dinitrophenol a weaker acid than phenol.

presence of two $-NO _2$ groups make the hydrogen bonding easier, making 2 , 4-dinitrophenol soluble.

nitro group reacts with $Na _2CO _3$ while -$OH$ group does not.

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