20 , ml solution contains 0.1 , M, NH_4Cl and 0.01 , M , NH_4OH. … - Vidyadip

MCQ

$20\, ml$ solution contains $0.1\, M, NH_4Cl$ and $0.01\, M\, NH_4OH$. By adding which one its $pH$ will not change ?

✓
Addition of $1\,ml$ water
B
Addition of $5\,ml$, $0.1\, M\, NH_4Cl$
C
Addition of $5\,ml$, $0.1\, M\, NH_4OH$
D
Addition of $10\,ml$, $0.1\,M\, NH_4Cl$

✓

Answer

Correct option: A.

Addition of $1\,ml$ water

a
By addition of small amount of water $pH$ of buffer solution does not change

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