Calculate Hydrogen Ion Concentrations

Which is the correct equation for calculating pH?

• pH = log[H⁺]

• pH = -log[H⁺]

• pH = 10^-[H+]

• pH = In[H⁺]

What is the [H⁺] in a solution with a pH of 11?

• 1 x 10^-1 M

• 1 x 10^-2 M

• 1 x 10¹¹ M

• 1 x 10^-11 M

Which equation allows the calculation of the hydrogen ion concentration if the pH of a solution is known?

• [H⁺] = 10^-log(pH)

• [H⁺] = 10^-(pH)

• [H⁺] = 10^(pH)

• [H⁺] = -log(pH)

A solution is prepared by dissolving 4.85 g of HCl into enough water to make 2.50 L of solution. Calculate the pH of the solution.

• 2.274

• 1.724

• 1.472

• 1.274

Tags

NGSS.HS-PS1-5

The pOH of a solution is 6.12. What is the concentration of [H₃O⁺] in the solution?

• 5.86 x 10^-8 M

• 4.12 x 10^-8 M

• 1.32 x 10^-9 M

• 3.67 x 10^-8 M

• 1.32 x 10^-8 M

If the H₃O⁺ ion concentration of solution is increased ten times, its pH will:

• Increase by 10

• Decrease by 1

• Increase by 1

• Decrease by 10

What is the pOH of a solution with and [OH^-] = 4.5 x 10^-4?

• 3.53

• 3.80

• 3.35

• 5.33

What is the [OH-] if the [H+] is 1.0 x 10-3M?

• 1.0 x 10-3 M
• 6.02 x 10-23 M
• 1.0 x 10-14 M
• 1.0 x 10-11 M

What is the pH of a 1.53 x 10^-6 M solution of HCl?

• 5.82

• 8.18

• 6.99

• 4.15

Acetic Acid (HC₂H₃O₂) is a weak monoprotic acid. It's concentration is 0.20M and it dissociates only 0.95%. What is the pOH?

• .698

• 2.72

• 11.28

• None of the answers are correct