The Ka of a certain indicator is 4 * 10-7. The color of HIn is green and that of In - is red. A few drops of the indicator are added to an HCl solution, which is then titrated against an NaOH solution. Over which pH range will the indicator change color?4.4 to 6.46.4 to 8.43.4 to 5.47.4 to 9.45.4 to 7.4
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Home » Chemistry » The Ka of a certain indicator is 4 * 10-7. The color of HIn is green and that of In - is red. A few drops of the indicator are added to an HCl solution, which is then titrated against an NaOH solution.