and without app I'd be struggling really badly. Calculating Equilibrium Concentrations - Chemistry LibreTexts This can be flipped to calculate pH from hydronium concentration: \[pH = -\log[H_3O^+]\] . I can solve any questions using it and it's work like a tutor , it teaches every minute details about a mathematical Problem. When given the pH value of a solution, solving for \(K_a\) requires the following steps: Calculate the \(K_a\) value of a 0.2 M aqueous solution of propionic acid (\(\ce{CH3CH2CO2H}\)) with a pH of 4.88. How do you calculate Ka from pKa? This app just actually give me the right answers?, the app has been in my phone for two years, and for those two years its been helping me whenever I cant answer a certain question. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. You do need to pay to get worked out solutions but in a pinch it can at least speed up getting your desired answers, sometimes you have to pay to see the steps and explanation, but for the most part it's free. How to find pka from ka without calculator - Math Methods Take some tips from us and learn How to get pka from ka. 10 - (pKa) = Ka. For the Change in Concentration box, we . % of people told us that this article helped them. The value of Ka will be = 1.778 x 10^-5. How to calculate pKa. Vocabulary and. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/1e\/Find-Ka-from-Pka-Step-1.jpg\/v4-460px-Find-Ka-from-Pka-Step-1.jpg","bigUrl":"\/images\/thumb\/1\/1e\/Find-Ka-from-Pka-Step-1.jpg\/v4-728px-Find-Ka-from-Pka-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"