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How many gm of solid KOH must be added t...

How many gm of solid KOH must be added to 100 mL of a buffer solution to make the pH of solution 6.0, if it is 0.1 M each w.r.t. acid HA and salt K A.
`[Given : pK_(a)(HA)=5]`

A

`0.458`

B

`0.327`

C

`5.19`

D

None of these

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