Question

A solution is made by adding 0.390 g Ca(OH)2(s), 35.0 mL of 1.45 M HNO3, and enough water to make a final volume of 75.0 mL.

Assuming that all of the solid dissolves, what is the pH of the final solution?

Answer 1

Calcium hidroxide is a strong base and nitric acid is a strong acid. To calculate the pH, we need to know the final number of H or OH that not react.

First, calculate the number of moles of calcium hydroxide and nitric acid.

Now, make the ICE table:

Now, calculate the concentration of hydrogen ion.