Description
I am completing a lab at home where I had to make a PH indicator solution out of a liquid made from boiling red cabbage leaves. I added 15 drops of the PH indicator solution to 1 Tablespoon the various substances below in the chart. The salt, vegetable oil, ginger ale and baking soda were made by adding 1 tsp of those substances to 1 tablespoon of distilled water. Those instructions and ph ranges were provided in the lab instructions. Chemistry is NOT my subject and now I am stumped trying to figure out how to complete the remainder of the chart for the lab. The chart is below.
Substance | color of solution without indicator | color of solution with indicator | pH | [H+] | pOH | [OH-] | |
Solution #1 | rubbing alcohol | clear | lilac | 5 - 6 | |||
Solution #2 | vinegar | clear | cherry red | 2 | |||
Solution #3 | baking soda | white | blue | 8 - 9 | |||
Solution #4 | ginger ale | clear | lilac | 5- 6 | |||
Solution #5 | vegetable oil | clear | lilac | 5 - 6 | |||
Solution #6 | salt | clear cloudy | blue | 8 - 9 | |||
Explanation & Answer
Hi, Attached is the detail of the problem, let me know if you have any questions, thank you. Best,James
The formula used for the calculation:
PH = -log10 [H+ ]
[H+ ] = 10-PH
In the solution,
[H+ ][OH-] = 1*10-14...
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