Anonymous
Anonymous asked in Science & MathematicsPhysics · 7 months ago

# Can yall please help me with this physic question? What is the hydroxide ion concentration in an aqueous solution where the pH = 5?

Relevance
• 7 months ago

The following equation shows the relationship between the hydronium ion concentration and the hydroxide ion concentration.

[H3O+1] * [OH-1] = 1 * 10^-14

A solution with a pH of 5 has a hydronium ion concentration of 1 * 10^-5.

1 * 10^-5 * [OH-1] = 1 * 10^-14

[OH-1] = 1 * 10^-9

The following equation shows the relationship between the pH of a solution and the hydronium ion concentration

pH = -1 * log [H3O+1]

5 = -1 * log [H3O+1]

log [H3O+1] = -5

The log is the power of 10. This means a solution with a pH of 5 has a hydronium ion concentration of 1 * 10^-5. I hope this is helpful for you.

• GTB
Lv 7
7 months ago

pH + p)H = 14 so pOH = 14-pH; further pOH = - log [OH-] so [OH-] = 10^(-pOH) - 10^(14-pH) so if pH = 5, the [OH-] = 10^(14-5)

understand the math and then plug in the values.

• electron1
Lv 7
7 months agoReport

hydroxide ion concentration.

[H3O+1] * [OH-1] = 1 * 10^-14

A solution with a pH of 5 has a hydronium ion concentration of 1 * 10^-5.

1 * 10^-5 * [OH-1] = 1 * 10^-14
[OH-1] = 1 * 10^-9