A diprotic acid H₂A is titrated with 0.100 M NaOH at 25 °C
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A diprotic acid H₂A is titrated with 0.100 M NaOH at 25 °C. The first equivalence point occurs at pH 5.0 and the second at pH 9.2. Select an appropriate indicator for EACH equivalence point from the following list and identify which equivalence point it should monitor.
• bromcresol green (3.8–5.4)
• phenolphthalein (8.3–10.0)
• methyl orange (3.1–4.4)