Practice: Sulfurous acid, H2SO3, represents a diprotic acid with a Ka1 = 1.6 × 10−2 and Ka2 = 4.6 × 10−5. Calculate the pH when given 0.200 M H2SO3.
Diprotic Acids and Bases require ICE Charts to determine their pH and pOH respectively
Concept #1: Sulfuric acid represents the only strong diprotic acid
Example #1: Calculate the pH of a 0.0550 M H2SO4 solution. Ka1 = 1.0 x 103 and Ka2 = 1.2 x 10-2.
Example #2: Calculate the pH of a 0.115 M carbonic acid, H2CO3, solution. Ka1 = 4.3 x 10-7 and Ka2 = 5.6 x 10-11.
Example #3: Determine the [CO32–] when given 0.115 M carbonic acid, H2CO3, solution. Ka1 = 4.3 x 10-7 and Ka2 = 5.6 x 10-11.
Practice: Sulfurous acid, H2SO3, represents a diprotic acid with a Ka1 = 1.6 × 10−2 and Ka2 = 4.6 × 10−5. Calculate the pH when given 0.200 M H2SO3.
Practice: Determine the pH of 0.115 M Na2S. Hydrosulfuric acid, H2S, possesses Ka1 = 1.0 × 10−7 and Ka2 = 9.1 × 10−8.
