So we take the logs of both sides and we get log of base ten of the hydronium concentration of this guy equals log of base ten of this whole guy. Now our next goal is to use the laws of logs to convert this guy from this more compact state to a less compact state. Now, what we get is the following log of the hydronium concentration. This guy is equal to notice inside this log we're multiplying ka times this whole thing, this ratio. So another way of expressing this is to use the logs of logs and we get log of ka plus log of this guy. So the concentration of the conjugate axis divided by the concentration of conjugate base.