🤓 Based on our data, we think this question is relevant for Professor Cruz's class at USF.
To calculate Ka for HA
Step 1: [HA]initial (molarity)
[HA]initial = 0.5 M
One mole of a weak acid HA was dissolved in 2.0 L of solution. After the system had come to equilibrium, the concentration of HA was found to be 0.45 M. Calculate Ka for HA.