[dmblove26]

In class we labeled 6 test tubes with pHs of 2,4,6,8,10,12. Afterwards we placed about 1 mL of the appropriate pH buffer in each labeled test tube. Then we added different drops of juices into the test tubes like cabbage, orange and grape juice.

Explain the purpose of adding 1 mL of appropriate pH buffer into each labeled test tubes?I'm not sure but Is it because the different types of juices added would react differently?

[Hunter2]

The goal is to get a stable pH. The juices itself are containing acids, like citric acid, etc. The buffer keep the pH stable is some range.

[dmblove26]

Thank you for your help. I appreciate it!