Problem: Determine the pH of each of the following solutions.0.19 M KCHO2 (Ka for HCHO2 is 1.8×10−4)

FREE Expert Solution

We’re being asked to calculate the pH of a 0.19 M KCHO2 


0.19 M KCHO2 (Ka for HCHO2 is 1.8×10−4)


CHO2- is a weak base that will further react in water to form OH-

KCHO2  (aq) + H2O (l) → OH- (aq) + HCHO2 (aq) + K+ (aq)



From this, we can construct an ICE table for the reaction of CHO2in a solution. Remember that liquids are ignored in the ICE table.


92% (242 ratings)
View Complete Written Solution
Problem Details

Determine the pH of each of the following solutions.

0.19 M KCHO2 (Ka for HCHO2 is 1.8×10−4)

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Weak Bases concept. If you need more Weak Bases practice, you can also practice Weak Bases practice problems.