Question

What would you predict about a chemical that has a hydrogen ion concentration of 1 x 10 to the -12 power M?

It will form salt and water when added to a base

It contains no hydroxide ions

It has high concentration of hydroxide ions

It has a sour taste

Answer 1

It has high concentration of hydroxide ions

Step-by-step explanation:

pH is the negative logarithm of hydrogen in concentration.

pH = - lg [H⁺]

Given, [H⁺] = 10⁻¹²

pH = -log 10⁻¹² = 12

When the pH is below 7 the chemical is acidic and when the pH is above 7 the chemical is basic. Therefore the given chemical is basic. Bases have a high concentration of OH⁻ (hydroxide ion) concentration.

Answer 2

Answer:-

It has high concentration of hydroxide ions.

Explanation:-

Given hydrogen ion concentration [H+] = 1 x 10^-12 M

Using the formula

pH = - log [H+]

= - log [1 x 10^-12]

= 12

Since the pH is above 7 the chemical is a base.

A base has a high concentration of hydroxide ions.