A sample of acetic acid (Ka = ) is titrated at with NaOH

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

A 25.0 mL25.0\,\text{mL} sample of 0.100 M0.100\,\text{M} acetic acid (Ka = 1.8×10−51.8 \times 10^{-5}) is titrated at 25 ∘C25\,^{\circ}\text{C} with 0.100 M0.100\,\text{M} NaOH. After exactly 25.0 mL25.0\,\text{mL} of the base has been added, which indicator from the list would most appropriately signal the equivalence point? (a) Methyl red (b) Alizarin yellow R (c) Phenolphthalein (d) Bromothymol blue

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