We plug that in and we get a PH of six. In fact, we see that anytime this is greater than this the PH of that solution will be below seven. And so if the PH of our solution is below seven at room temperature, that solution is said to be acidic. Now, what about basic solutions? Well, a solution is said to be basic if the concentration of the hydrogen ion is less than the concentration of the hydro hydroxide ion. And so in this case, the solution is said to be basic.