Which of the following does not make any chan | vedclass

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(D) The $pH$ of a solution is defined as $pH = -\log[H^+]$.Adding pure water (options $A$ and $B$) to $HCl$ increases the volume,which decreases the c

Vedclass · Accepted Answer

The same $20 \ mL$ of dilute $HCl$

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(D) The $pH$ of a solution is defined as $pH = -\log[H^+]$.Adding pure water (options $A$ and $B$) to $HCl$ increases the volume,which decreases the concentration of $H^+$ ions,thereby increasing the $pH$.Adding more $HCl$ (option $C$) increases the concentration of $H^+$ ions,which decreases the $pH$.Adding the same dilute $HCl$ (option $D$) does not change the concentration of $H^+$ ions in the original solution,as the ratio of moles to volume remains constant. Therefore,the $pH$ remains unchanged.

Which of the following does not make any change in $pH$ when added to $10 \ mL$ of dilute $HCl$?

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