Bronsted-Lowry Acid-Base Equilibrium

Acid Base Equilibrium Organic Chemistry Practice Questions

The equilibrium constant for an acid-base indicator is determined by preparing three solutions, each of which has a total indicator concentration of 1.35 ×10^-5 M. The pH of the first solution is adjusted until it is acidic enough to ensure that only the acid form of the indicator is present, yielding an absorbance of 0.673 . The absorbance of the second solution, whose pH is adjusted to give only the base form of the indicator, is 0.118 . The pH of the third solution is adjusted to 4.17 and has