Question

Define these terms:
a) Phenolphthalein c) distilled water
b) Universal indicator d) sodium hydrogen carbonate

Answer 1

a. Phenolphthalein will lose its colour and become colourless
b. Acetic acid will thoroughly mix with distilled water
c. Universal indicator will turn slightly red
d. Sodium Acetate (NaC2H3O2), Carbon di Oxide and Water will be formed

Hope it help
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Answer 2

phenolphthalein is an indicator to detect acidic and basic media

distilled water is the purest form of water with no impurities or anything present in it

A universal indicator is a pH indicator used to represent the acidic and basic nature's of solutions

NaHCO3 is also called baking soda which is usually used in cooking