Phenolphthalein is used as an indicator for basic solutions in the electrolytic cell that's used to split water into its elements. Around which electrode would the solution turn pink?

Anode

Explanation:

In the electrolysis of acidified water;

Anode half reaction;

4OH^-(aq)> 2H2O(l) + O2(g) + 4e

Cathode half reaction;

4H^+(aq) + 4e > 2H2(g)

Phenolphthalein has a pink colour in a neutral medium. A neutral medium in this electrolysis is one in which the hydroxide ion is reduced to water and oxygen and this occurs at the anode hence this is the electrode around which the solution will turn pink.

the volume of fluid displaced would equal the volume of the gas. use a gas syringe - this is a laboratory instrument that can be used to withdraw a certain volume of gas from a closed system or to measure the volume of gas from a chemical reaction.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.