Which of the following solutions has the high | vedclass

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(D) $HClO_4$ is a strong acid,so it will have a very low $pH$. $CH_3COOH$ is a weak acid,which will have a $pH$ lower than $7$. $HCl$ is a strong acid

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$0.2 \, M \, NaCl$

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(D) $HClO_4$ is a strong acid,so it will have a very low $pH$. $CH_3COOH$ is a weak acid,which will have a $pH$ lower than $7$. $HCl$ is a strong acid,so it will have a low $pH$. $NaCl$ is a salt formed from a strong acid $(HCl)$ and a strong base $(NaOH)$,so it undergoes no hydrolysis and remains neutral with a $pH = 7$. Since the other three solutions are acidic $(pH < 7)$,the $0.2 \, M \, NaCl$ solution has the highest $pH$.

Which of the following solutions has the highest $pH$?

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