CHEMISTRY · Subjective · CBSE · Chemistry · Acids, Bases and Salts · Acids, Bases and Salts
Problem
At 25 °C, Indicator X has pKa=6.3 and Indicator Y has pKa=8.1. The pKa of each indicator decreases by 0.015 pH units per °C rise in temperature. A titration that has an equivalence-point pH of 7.8 is to be performed at 40 °C. Which indicator will provide the more accurate endpoint? (Show the adjusted pKa values in your reasoning.)