A 50.0 mL sample contains 0.300 M and 0.300 M ( for is 9.25)
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A 50.0 mL sample contains 0.300 M NH3 and 0.300 M NH4Cl (pKa for NH4+ is 9.25). A pellet of solid NaOH (0.50 g, molar mass 40.0 g/mol) dissolves completely in the solution; the volume change is negligible. Calculate the pH after the NaOH has dissolved. Provide the answer to two decimal places.