pH and Acid-Base Concentration

How is pH related to the acid or base concentration of a solution?

• pH increases as the acid concentration increases

• pH decreases as the acid concentration increases

• pH is unrelated to the acid or base concentration

• pH measures the neutral concentration of a solution

How does H⁺ concentration relate to pH?

• The higher the pH, the lower the H⁺ concentration.
• There is no relationship between pH and H⁺ concentration.
• H⁺ concentration is directly proportional to pH.
• The lower the pH, the higher the H⁺ concentration.

What is the pH of a 0.00001 M HCl solution?

• 7
• 9
• 3
• 5

What is the pH of a 4.2 x 10^-3 M HCl solution?

• 1.76
• 5.92
• 3.45
• 2.38

What is the pH of a 0.000001 M NaOH solution?

• 6

• 7

• 8

• 9

What is the relationship between pH and H+ concentration?

• pH is inversely proportional to H+ concentration

• pH is directly proportional to H+ concentration

• pH and H+ concentration are unrelated

• pH equals H+ concentration

How is the H+ concentration related to the OH- concentration in a solution?

• The H+ concentration is always greater than the OH- concentration
• The H+ concentration is always less than the OH- concentration
• In a solution, the product of the H+ concentration and the OH- concentration is always equal to 1 x 10^-14.

• The H+ concentration is always equal to the OH- concentration

What pH would you expect for solutions with the concentrations given here?

0.0000007

• pH less than 7

• pH equal to 7

• pH greater than 7

Determine the pH for solutions with the H+ concentrations given here.

• a. pH = 8

  b. pH = 4

  c. pH = 12

• a. pH = 4

  b. pH = 12

  c. pH = 8

• a. pH = 5

  b. pH = 10

  c. pH = 15

• a. pH = 2.5

  b. pH = 3.1

  c. pH = 1.2

Which of the solutions in are acids? Which are bases?

• Solution A and D are acids, solution C and B are bases

• Only Solution B is an acid, and Solution A is a base

• Solution A and B are acids, solution C and D are bases

• Both Solution A and Solution B are bases