Understanding pH and pOH Calculations

What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-4 M?

• 3

• 5

• 4

• 6

Calculate the pOH of a solution with a pH of 7.5.

• 5.5

• 8.0

• 7.0

• 6.5

If the pH of a solution is 3, what is the concentration of hydrogen ions in moles per liter?

• 0.1 moles per liter

• 0.01 moles per liter

• 0.0001 moles per liter

• 0.001 moles per liter

What is the relationship between pH and pOH in any aqueous solution?

• pH + pOH = 7 in all solutions.

• pH and pOH are unrelated in aqueous solutions.

• pH = pOH at all temperatures.

• pH + pOH = 14 in aqueous solutions at 25°C.

How do you convert pH to hydrogen ion concentration?

• [H+] = 7 - pH

• [H+] = 10^(-pH)

• [H+] = 1/pH

• [H+] = pH^10

If a solution has a pOH of 10, what is its pH?

• 6

• 4

• 12

• 8

What is the pH of a neutral solution at 25°C?

• 7

• 6

• 5

• 8

How does dilution affect the pH of a strong acid?

• Dilution increases the pH of a strong acid.

• Dilution has no effect on the pH of a strong acid.

• Dilution makes the pH more acidic.

• Dilution decreases the pH of a strong acid.

What is the formula to calculate pH from the concentration of hydroxide ions?

• pH = 14 + log[OH-]

• pH = 7 + log[OH-]

• pH = 14 - (-log[OH-])

• pH = log[OH-]

If the pH of a solution is increased by 1 unit, how does the hydrogen ion concentration change?

• The hydrogen ion concentration decreases by a factor of 100.

• The hydrogen ion concentration remains the same.

• The hydrogen ion concentration decreases by a factor of 10.

• The hydrogen ion concentration increases by a factor of 10.