Question

Question 3
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The pH of a solution is 13.
What is the hydrogen ion concentration?
[H*] =
Is this an acid, base or neutral?

Answer 1

Answer:

[H+] = 1 x 10⁻¹³ M and it is a base.

Explanation:

Remember that if pH is less than 7 is an acid, if pH is greater than 7 is a base, and if pH = 7 is neutral; so in this case, we have a base because our pH = 13 is greater than 7.

Now, to calculate the hydrogen ion concentration H+, we have to apply the following formula:

$[H^+]=10^{-pH}.$

So we just have to replace the value of pH, like this:

$\begin{gathered} [H{}^+]=10^{-13}, \\ \\ [H^+]=1\cdot10^{-13}\text{ M.} \end{gathered}$

The answer would be [H+] = 1 x 10⁻¹³ M and it is a base.