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NH4F is a salt of weak acid HF ( ka = 7....

`NH_4F` is a salt of weak acid HF ( `ka = 7.2 xx 10^(-4))` and weak base `NH_4OH` `( kb = 1.8 xx 10^(-5))`, the solution of NH4F will be

A

slightly acidic

B

slightly basic

C

strongly basic

D

neutral

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