Problem: Determine the [H3O+] of a 0.240M solution of formic acid.

FREE Expert Solution

Formic acid is weak so we have to use an ICE chart to solve. 

We’re being asked to calculate the pH of a 0.240 M aqueous solution of HCOOH.


HCOOH(aq) + H2O(l)  H3O+(aq) + HCOO(aq); Ka = 1.8 × 10–4


From this, we can construct an ICE table. Remember that liquids are ignored in the ICE table.



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Problem Details

Determine the [H3O+] of a 0.240M solution of formic acid.

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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 Acids concept. If you need more Weak Acids practice, you can also practice Weak Acids practice problems.