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How can calculate ka rating?

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Anonymous

16y ago
Updated: 8/16/2019

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16y ago

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How can one calculate the acid dissociation constant (Ka) from the concentration of a solution?

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0.15M solution of weak acid HA has pHof 5.35 What is Ka?

To calculate the Ka value of the weak acid HA, you can use the pH of the solution and the formula for calculating the Ka. First, calculate the concentration of [H+], which is 10^(-pH). Then, use the expression for Ka: Ka = [H+][A-]/[HA], where [A-] and [HA] are assumed to be equal in a weak acid solution. Plug in the [H+] value you calculated and the initial concentration of HA to find Ka.