pH/pKa calculations

What is the pH of an acidic solution of 0.0025M HCl

• 4.60

• 5.0

• 2.6

• 7

What is the pH of a solution where the [OH^-] is 7.30 x 10^-2 M?

• 1.14

• 2.0

• 12.9

• 7.3

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

what is the [H⁺] if the [OH^-] is 2.43x10^-9

• 4.11x10^-6

• 4.12x10^-6

• 4.1x10^-6

• 4.0x10^-6

What is the [OH^-] if the pH is 4.9?

• 7.94 x 10^-10 M

• 1.0 x 10^-4 M

• 7.94 x 10^-14 M

• 4.9 x 10^-10 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 pOH of a 0.050M Ca(OH)₂ solution

• 11

• 13

• 14

• 1.0

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water