Acid-Base Buffer_II

What will be the pH of 1.0 L water (pH = 7.00) after 5.0 mL of 5.0 M NaOH solution has been added?

• 14.00

• 8.00

• 12.40

• 7.00

What will be the pH of 1.0 L water (pH = 7.00) after 5.0 mL of 5.0 M HCl solution has been added?

• 1.60

• 7.00

• 12.40

• 10.00

What is the pH of a buffer solution that is 0.50 M in NH₃ and 0.20 M in NH₄Cl. For ammonia, pK_b = 4.75.

• 12.40

• 7.00

• 6.95

• 9.65

A buffer solution consists of 0.50 M in NH₃ (pK_b = 4.75) and 0.20 M in NH₄Cl.

What will be the pH of 1.0 L of the buffer solution upon addition of 0.010 mol of solid NaOH to the original buffer solution.

• 9.68

• 5.68

• 11.58

• 7.00

Tags

NGSS.HS-PS1-5

A buffer solution consists of 0.50 M in NH₃ (pK_b = 4.75) and 0.20 M in NH₄Cl.

Calculate the pH of 1.0 L of the buffer solution upon addition of 30.0 mL of 1.0 M HCl to the original buffer solution.

• 7.00

• 9.56

• 11.65

• 12.40