pH and Hydronium Concentration

If a solution has a [H3O⁺] of 9.3x10^-11, what is the pH?

• 10.0

• 4.0

• 3.5

• 8.2

If a solution has a [OH^-] of 2.3x10^-4, it must be a(n)...

• Acid

• Base

• Neutral

If the [OH-] of a solution is 2.7 x 10^-4 mol/L the pOH of the solution is

• 10.44
• 3.56
• 1.00
• -4.43

What is the equation for calculating pH?

• pH = [H⁺]

• pH = log [H⁺]

• pH = -log[OH^-]

• pH = -log [H⁺]

If we dissolve 20.0 grams of HCl in 1.2 L of water, what is the pH of that solution?

• 0.34

• 4.21

• 7.20

• 10.34

If the [H3O+] of a solution is 6.8 x 10^-9 mol/L the pH is

• 8.17

• 8.2

• 9.99

• 8.62

if the [H+] of a solution is 8.4 x 10^-3 mol/L the pOH of the solution will be

• 2.08
• 11.92
• 1.02
• 12.98

If the hydronium ion H₃O⁺ concentration is equal to the hydroxide ion OH^- concentration, the solution is a(n)

• acid

• base

• salt

• neutral solution

The pH of a solution is 8.43. What is the hydronium ion H₃O⁺ concentration?

• 3.7 x 10^-9 M

• 2.7 x 10^-6 M

• 1.0 x 10^-8.43 M

• 1.0 x 10^-14

The pH of a solution is 8.43. What is the hydroxide ion OH^- concentration?

• 3.7 x 10^-9 M

• 2.7 x 10^-6 M

• antilog (-pH)

• 1.0 x 10^-14/-pH