What is the [H+] in a 0.98 M solution of formic acid?

The Ka of formic acid is 1.8 x 10-4

See your H3PO4 post. Most of these are done the same way.

Thank you

To find the [H+] in a solution of formic acid, we can use the dissociation equation and the Ka value of formic acid.

The dissociation equation of formic acid is:
HCOOH ⇌ H+ + HCOO-

From the equation, we can see that for every molecule of formic acid that dissociates, it produces one hydrogen ion (H+). Therefore, the [H+] concentration will be equal to the concentration of the formic acid.

In this case, the concentration of formic acid is given as 0.98 M. Therefore, the [H+] concentration in the solution is also 0.98 M.

So, the [H+] in a 0.98 M solution of formic acid is 0.98 M.