Question

What would you predict about a chemical that has a hydrogen ion concentration of 1 × 10^−12 M?

A) It will form salt and water when added to a base.
B) It contains no hydroxide ions.
C) It has high concentration of hydroxide ions.
D) It has a sour taste.

It's not B, and I'm pretty sure that it's not C so... What would it be?

Answer 1

B is right hope it helped.

Answer 2

Answer: Option (C) is the correct answer.

Explanation:

Relation between pH and hydrogen ion concentration is as follows.

          pH = $-log[H^{+}]$

It is given that hydrogen ion concentration is $1 \times 10^{-12}$ M. Therefore, putting this value in the above formula as follows.

         pH = $-log[H^{+}]$

               = $-log[1 \times 10^{-12}]$

               = - (-12) (log [1] + log[10])                 (log[1] = 0 and log[10] = 1)      

               = 12

As pH = 12, hence the solution will be highly basic. As a result, there will be high concentration of hydroxide ions.