Hydrogen Ions and Acidity

Neutral solutions have a pH of:

• 0

• 1

• 7

• 14

True or false: a neutral solution has equal amounts of H⁺ and OH^-.

• True

• False

Which is true?

• pH of less than 7 is basic; pH of more than 7 is acidic

• pH of less than 7 is acidic; pH of more than 7 is basic

What is the pH of a solution that has a [H+] of 2.5 x 10-5?

• 4.60
• 5.0
• 2.5
• 7

What is the [H+] if the pH is 4.0?

• 1.0 x 10-10  M
• 1.0 x 10-4  M
• 1.0 x 10-14  M
• 1.0 x 10-7  M

The lower the pH, the greater the concentration of :

• OH-
• H+

The greater the pOH, the smaller the concentration of 

• OH-
• H+

What is the pH of a solution where the [H+] is 1.0 x 10-11?

• 11
• 13
• 14
• 1

What is the pH of a 0.15 M solution of HClO₄?

• 0.82
• 13.18
• 0.15
• 1

What is the pH of a 0.25 M solution of LiOH?

• 0.25
• 13.4
• 0.60
• 12.3