17. Acid and Base Equilibrium

The pH of a $0.0040$ M solution of $C_a{\left(OH\right)}^2$ (assume complete dissociation at 25 °C) is closest to:

A solution containing aqueous HCl would most likely have which property at 25 °C?

Which statement best describes the behavior of a strong acid such as $HCl$ in water when calculating pH?

What is the pH of a $0.001 M$ $NaOH$ solution at $25°C$ (assume complete dissociation)?

What is the pH of a $0.050 M$ $\mathrm{Li}OH$ solution at $25°C$? Assume $\mathrm{Li}OH$ is a strong base that dissociates completely.