A 25.0 mL sample of a buffer containing 0.200 M HPO₄²⁻ and 0.300 M H₂PO₄⁻ is titrated…
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A 25.0 mL sample of a buffer containing 0.200 M HPO₄²⁻ and 0.300 M H₂PO₄⁻ is titrated sequentially with 5.00 mL of 0.100 M NaOH followed by 5.00 mL of 0.100 M HCl. Considering both neutralization reactions and the dilution that occurs, predict whether the final pH will be greater than, less than, or approximately equal to the initial pH of the buffer. Provide a concise justification.