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Help determining the pH of the three unknown substances on the right side A B and C using the ph indicator chart

Help determining the pH of the three unknown substances on the right side A B and-example-1

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To determine the pH of each substance we need to compare the results obtained for them with each indicator.

Substance A:

We can see from the result of the indicator bromothymol blue the pH should be between 5 and 7. Also we get the same result from the indicator bromocresol green. We can then assume that the pH of substance A is around 6.

Substance B:

For this substance it is easy to see that all the indicators show that this substance has a pH of 11 as all the colours match for that value.

Substance C:

For this substance we can easily see that all the indicators show that the pH of it is 1 as all of them match the colours of that value.

User Mary Hamlin
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