When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, then the pH of the resulting solution will be:

Which of the following salts will give the highest pH in water?
1. KCl
2. NaCl
3. Na₂CO₃
4. CuSO₄

Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value?
1. $BaC{l}_2$
2. $AlC{l}_3$
3. $LiCl$
4. $BeC{l}_2$

What is the [OH^-] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M Ba(OH)₂?

1. 0.10 M

2. 0.40 M

3. 0.0050 M

4. 0.12 M

Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H⁺ ion concentration in the mixture?
1. $1.11\times {10}^{-4}$ $\mathrm{M}$
2. $3.7\times {10}^{-4}$ $\mathrm{M}$
3. $3.7\times {10}^{-3}$ $\mathrm{M}$
4. $1.11\times {10}^{-3}$ $\mathrm{M}$

The pOH of a solution at 25 °C that contains 1×10^-10 M of hydronium ions is:

The hydrogen ion concentration of a 10^-8 M HCl aqueous solution at 298 K (K_w = 10^-14) is:

1. $1.0\times {10}^{-6}$ $M$

2. $1.0525\times {10}^{-7}$ $M$

3. $9.525\times {10}^{-8}$ $M$

4. $1.0\times {10}^{-8}$ $M$