Question

If the pH of a solution is 10.3, what is the H+ concentration?

Answer 1

Answer : The concentration of $H^+$ ion is, $5.01\times 10^{-11}M$

Solution :

pH : It is defined as the negative logarithm of hydronium ion $(H_3O^+)$ or hydrogen ion $(H^+)$ ion concentration.

Formula used :

$pH=-\log [H^+]$

Now put the value of pH in this formula, we get the concentration of $H^+$ ion.

$10.3=-\log [H^+]$

$[H^+]=5.01\times 10^{-11}M$

Therefore, the concentration of $H^+$ ion is, $5.01\times 10^{-11}M$