# Problem:  A monoprotic acid, HA, is dissolved in water: HA + H2O ⇋ H3O+ + A-The equilibrium concentrations of the reactants and products are [HA] = 0.230 M[H3O+] = 2.00x10-4 M [A-] = 2.00x10-4 MCalculate the Ka value for the acid HA.

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100% (346 ratings) ###### Problem Details

A monoprotic acid, HA, is dissolved in water:

HA + H2O ⇋ H3O+ + A-

The equilibrium concentrations of the reactants and products are

[HA] = 0.230 M

[H3O+] = 2.00x10-4

[A-] = 2.00x10-4 M

Calculate the Ka value for the acid HA.

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.

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Based on our data, we think this problem is relevant for Professor Lilly's class at HOWARDCC.