Acids and Bases - pH and H+ Calculations

Question 1

pH and H+ relationships

Answer 1

• expresses H+ concentration as the negative logarithm of the H+ concentration in moles per liter
• pH = -log[H+]
• [H+] = 10^-pH

Question 2

what is the pH of a 6.7*10^-3 M H+ solution?

Answer 2

• pH = -log[H+]
• pH = -log[6.7*10^-3]
• pH = 2.16

Question 3

what is the [H+] if the pH of a solution is 4.50?

Answer 3

• [H+] = 10^-pH
• [H+] = 10^-4.5
• [H+] = 3.2*10^-5