2. (6 pts) Using the information below and the table provided, estimate the pH o

Question

2. (6 pts) Using the information below and the table provided, estimate the pH of a 1 M solution of sodium bisulfate (NaHSO4). When phenolpthalein is added to 1 M NaHSO4 the resulting solution is colorless. When thymol blue is added to 1 M NaHSO4 the resulting solution is yellow. When methyl violet is added to 1 M NaHSO4 the resulting solution is violet. 3. (4 pts) Which of he indicators in the table above would be the best to use if you wanted to observe changes in a solution at around pH 7? 4. (4 pts) If you added Thymol blue to a solution of pH 5 what color would you observe?

Explanation / Answer

2. According to given information The pH of 1M NaHSO3 is 2 - 2.8

3. Bromothymol blue will be good indicator at around pH 7

4. thymol blue will give yellow colour in pH 5

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