In a solution of acid,the H^{+} concentration | vedclass

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(C) The concentration of $H^{+}$ ions from the acid is $10^{-10} \ M$. Since the concentration is very low,the contribution of $H^{+}$ ions from the a

Vedclass · Accepted Answer

Between $6$ and $7$

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(C) The concentration of $H^{+}$ ions from the acid is $10^{-10} \ M$. Since the concentration is very low,the contribution of $H^{+}$ ions from the auto-ionization of water $(10^{-7} \ M)$ cannot be neglected. The total $[H^{+}] = [H^{+}]_{	ext{acid}} + [H^{+}]_{	ext{water}} = 10^{-10} + 10^{-7} \approx 10^{-7} \ M$. Therefore,the $pH = -\log[H^{+}] = -\log(10^{-7}) = 7$. However,since the solution is acidic,the $pH$ must be slightly less than $7$. Thus,the $pH$ lies between $6$ and $7$.

In a solution of acid,the $H^{+}$ concentration is $10^{-10} \ M$. The $pH$ of this solution will be:

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