G 304 mL of a 0.36 M potassium hydroxide solution is added to 341 mL of a 0.51 M lithium hydroxide solution. Calculate the pOH of the resulting solution.

pOH = 0.36

Explanation:

Both potassium hydroxide and lithium hydroxide solutions are strong bases, so you assume 100% dissociation.

1. Potassium hydroxide solution, KOH

Volume, V = 304 mL = 0.304 literMolarity, M = 0.36 Mnumber of moles, n = M × V = 0.36M × 0.304 liter = 0.10944 mol1 mole of KOH produces 1 mol of OH⁻ ion, thus the number of moles of OH⁻ is 0.10944

2. LIthium hydroxide, LiOH

Volume, V = 341 mL = 0.341 literMolarity, M = 0.51 Mnumber of moles, n = M × V = 0.341 liter × 0.51 M = 0.17391 mol1mole of LiOH produces 1 mol of OH⁻ ion, thus the number of moles of OH⁻ is 0.17391

3. Resulting solution

Number of moles of OH⁻ ions = 0.10944 mol + 0.17391 mol = 0.28335 molVolume of solution = 0.304 liter + 0.341 liter = 0.645 literMolar concentration = 0.28335 mol / 0.645 liter = 0.4393 M

4. pOH

        ← answer

D-no effect on the rate