Question

Question 6
How is the concentration of hydroxide ions $\left({\text{OH}}^{-}\right)$ affected when excess base is dissolved in a solution of sodium hydroxide?

Answer 1

Addition of an excess base to a solution of sodium hydroxide means an addition of more hydroxide ions $\left({\text{OH}}^{-}\right)$. This will increase the concentration of hydroxide ions $\left({\text{OH}}^{-}\right)$.