Assume that sulfuric acid behaves as a diprotic strong acid under the conditions described
CHEMISTRY · Multi-part · A Level · Chemistry · Acids and bases · Acids and bases
Problem
Assume that sulfuric acid behaves as a diprotic strong acid under the conditions described.
A laboratory technician mixes 20.0 mL of 0.100 M H₂SO₄(aq) with 30.0 mL of 0.150 M LiOH(aq) at 25 °C. Volumes are additive and all species are strong electrolytes.
(a) Write the balanced net ionic equation for the reaction that occurs.
(b) Calculate the total number of moles of acidic protons supplied by the H₂SO₄ before reaction begins.
(c) Determine which reagent is in excess after the reaction is complete and calculate the number of moles of that excess species.
(d) Calculate the concentration of the excess species in the final mixture.
(e) Determine the pH of the solution at 25 °C.