We're asked to write the equilibrium-constant expression for the reaction between an acid, HA and a base, B.
Recall that the equilibrium constant is the ratio of the products and reactants:
Note that solid and liquid compounds are ignored in the equilibrium expression.
First, we need to write the equation for the reaction between HA and B, recall that:
▪ B is a base and based on Bronsted-Lowry definition it is a proton (H+) acceptor.
▪ HA is an acid and based on Bronsted-Lowry definition it is a proton donor.
The equation is:
Equal quantities of 0.010M solutions of an acid HA and a base B are mixed. The pH of the resulting solution is 9.3.
Write equilibrium-constant expression for the reaction between HA and B.
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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 Acid Strong Base Titrations concept. You can view video lessons to learn Weak Acid Strong Base Titrations. Or if you need more Weak Acid Strong Base Titrations practice, you can also practice Weak Acid Strong Base Titrations practice problems.
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Based on our data, we think this problem is relevant for Professor Eroy-Reveles' class at UCSC.