MCQ
When $100\,mL$ of $0.1\,M\,NaCN$ solution is titrated with $0.1\,M\,HCl$ solution the variation of $pH$ of solution with volume of $HCl$ added will be
- A
- B
- ✓
- D
✓
Answer
Correct option: C.
c
Initially $pH$ will decrease fast , as the $H ^{+}$concentration increases, then slowly due to buffer formation and then will decrease fast as buffer action diminishes.
Initially $pH$ will decrease fast , as the $H ^{+}$concentration increases, then slowly due to buffer formation and then will decrease fast as buffer action diminishes.
$NaCN + HCl \rightarrow HCN + NaCl$
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