Consider an indicator Hin (yellow) + H2O =H30+ + In (red) with Ka = 1.0 x 104 Which of the responses contains all the tr
Posted: Wed May 18, 2022 1:36 pm
Consider an indicator Hin (yellow) + H2O =H30+ + In (red) with Ka = 1.0 x 104 Which of the responses contains all the true statements and no others? (1) The predominant color in its acid range is yellow. (2) In the middle of the pH range of its color change a solution containing the indicator will probably be orange. (3) At pH = 7.00, a solution containing this indicator (and no other colored species) will be red. (Hint: Write the equilibrium constant expression for the indicator.) (4) At pH = 7.00, most of the indicator is in the un-ionized form. (5) The pH at which the indicator changes color is pH = 4. O 1,3,5 another combination O 3,4,5 O 2,4 O 1,2,3,5