PH value of a solution changes from 3.5 to 7 after addition of a chemical X. a. What has been added to the solution (NaOH or HCl)? b. Why pH changed from 3.5 to 7? c. Can we test the change in pH by using Phenolphthalein? d. If 5 ml of NaOH reacts with 5 ml of Vinegar then the resulting solution will have pH more or less than 7?

PH value of a solution changes from 3.5 to 7 after addition of a chemi

1.	PH value of a solution changes from 3.5 to 7 after addition of a chemical X. a. What has been added to the solution (NaOH or HCl)? b. Why pH changed from 3.5 to 7? c. Can we test the change in pH by using Phenolphthalein? d. If 5 ml of NaOH reacts with 5 ml of Vinegar then the resulting solution will have pH more or less than 7?
Answer» OPTION no. C is MOSTLY CORRECT