### pH Indicator Table#### Indicators and their Color Changes:| Indicator | pH 1 | pH 2 | pH 3 | pH 4 | pH 5 | pH 6 | pH 7 | pH 8 | pH 9 | pH 10 | pH 11 | pH 12 ||--------------------|--------|--------|--------|-------|-------|--------|------------|--------|-------|-------|---------|---------|| Phenolphthalein | | | | | | | Colorless | | | | Pink | Pink || Bromothymol Blue | | | | | Yellow| Yellow | * | * | Blue | Blue | Blue | Blue || Methyl Orange | Red | Red | Red | | | | Yellow | Yellow | Yellow| | | |* The color at pH 7 for Bromothymol Blue may vary, being a transition color between yellow and blue.#### Questions and Answers:1. **What will be the intermediate color of bromothymol blue in a solution of pH 7?** The intermediate color of bromothymol blue in a solution of pH 7 is likely green, as it transitions between yellow and blue.2. **A colorless household solution was tested with the three indicators shown above. The solution was colorless with phenolphthalein, yellow with bromothymol blue, and orange with methyl orange. What is the pH of the solution? Be as specific as possible.** The pH of the solution is approximately 3 to 4. This conclusion is based on: - Colorless with phenolphthalein indicates a pH below 8. - Yellow with bromothymol blue indicates a pH below 6. - Orange with methyl orange indicates a pH around 3 to 4.

Given that :1. Bromomethyl blue changes its color from yellow to green to blue. The yellow color ranges from 1 to 5. The green color ranges from 6 to 7. Above pH 8, the color is blue. Thus, the intermediate color of bromomethyl blue in a solution having pH 7 is green.2. For a colorless household solution : The color of phenopthalein is colorless indicating pH is between 1 to 7. The color of pcromomethyl blue is yellow indicating pH is between 1 to 5. The color of methyl orange is orange indicating the pH is around 3.5. Thus, from the information above, the pH of the solution is 3.5 (approx).