Q6. The acid-base indicator bromocresol green changes colour in the pH range of 3.8 (yellow) to 5.4 (blue). Another acid-base indicator, methyl orange, changes colour in the pH range of 3.2 (red) to 4.4 (orange). When bromocresol green was added to a sample of an aqueous solution, it turned blue. When methyl orange was added to another sample of the same solution, it turned orange. What can you conclude about the pH of the solution? Explain your answer.

B. Your teacher gives you three test tubes. Each test tube contains a clear, colourless liquid. One liquid is an aqueous solution of an ionic substance. Another liquid is an aqueous solution of a molecular substance. The third liquid is distilled water. Outline a procedure you could use to determine which liquid is which.