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Calculate the pH of an aqueous solution ...

Calculate the pH of an aqueous solution of `1.0M` ammonium formate assuming complete dissociation. `(pK_(a)` of formic acid `= 3.8 and pK_(b)` of ammonia `= 4.8`)

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`HCOONH_(4)` is a salt of a weak acid and a weak base.
`pH = 7+ ([pK_(a)-pK_(b)])/(2)=7+([3.8-4.8])/(2)=6.5`
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