Practice: 2. An indicator HInd is red in 0.1M NaOH and blue in 0.1M HCl. The pH range in which the colour change occurs in this indicator is 9.4-10.0. a) Write the equilibrium equation describing this indicator. Hindes H0ES Ind + H30t blue red b) What is the colour of Hind? blue what is the colour of Ind? Yede c) What is the pH at the transition point of this indicator? 9.7 d) What is the value of pKa for this indicator? 9-7 e) What is the Ka of this indicator? 1.995X10 f) At pH = 7.0, this indicator is the colour blue since [HInd] (>,<=) [Ind]. red g) At pH= 11.3, this indicator is the colour -10 h) At pH=9.7, this indicator is the colour since [HInd] (>,<,-) _____ [Ind]. since [HInd] (>,<=)==____ [Ind]. purphine