Question

Take 2 ml of NaOH in a test tube, add two drops of phenopthalene solu-
tion and then add few drops of dil. HCl to it. What is your observation
With respect to colour

Answer 1

Answer:

colourless

reason: the effect of base is nullified by an acid

Answer 2

The colour of the final mixture when added HCl to it :

The colour (pink colour) will disappear.

the reaction between an acid and a base is known as neutralisation in this reaction and acid neutralizes the effect of acid and a base this reaction result in the formation of salt and water and energy in the form of heat is evolved.