Hi can someone pls help solve this! Thank you so much!!

Question

1. What is the hydrogen

ion concentration of a

solution containing

3.98 pH?

2. What is the hydronium

ion concentration of a

solution containing

8.98 pH?

3. Calculate the hydrogen

ion concentration of a

solution with a pH

reading of 6.98.

Answer 1

Hydrogen ion (H⁺) concentration and hydronium ion (H₃O⁺) concentration essentially mean the same thing.

The definition of pH is the negative log of the hydrogen (hydronium) ion concentration.

1). pH = 3.98

[H⁺] = 1x10^-3.98 = 1.05x10^-4 M

2). pH = 8.98

[H⁺] = 1x10^-8.98 = 1.05x10^-9 M

3). pH = 6.98

[H⁺] = 1x10^-6.98 = 1.05x10^-7 M