Which of the following statements regarding p | vedclass

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(B) $1$. The $pH$ of neutral water at $25^{\circ}C$ is $7$,not $0$. Thus,option $A$ is correct.$2$. $CH_3COOH$ is a weak acid and $NaOH$ is a strong b

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The $pH$ of a mixture of $1 \, N \, CH_3COOH$ and $1 \, N \, NaOH$ is $7$.

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(B) $1$. The $pH$ of neutral water at $25^{\circ}C$ is $7$,not $0$. Thus,option $A$ is correct.$2$. $CH_3COOH$ is a weak acid and $NaOH$ is a strong base. Their mixture ($1 \, N$ each) forms $CH_3COONa$,which undergoes anionic hydrolysis. The resulting solution is basic,so the $pH$ will be greater than $7$,not $7$. Thus,option $B$ is incorrect.$3$. $NaCN$ is a salt of a weak acid $(HCN)$ and a strong base $(NaOH)$. It undergoes hydrolysis to form a basic solution,so $pH > 7$. Thus,option $C$ is correct.$4$. Both $CH_3COOH$ and $HCl$ are acids. Their mixture will be acidic,so $pH < 7$. Thus,option $D$ is correct.

Which of the following statements regarding $pH$ and $[H^+]$ is incorrect?

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