Solution of hydrochloric acid is added to sodium hydroxide solution contaninin phenolphthalein indicator dropwise. After some time pink colour of solution disappear.
a) Identifythe type of reaction:
b) Why does the pink colour of fades away after some time?
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a) Neutralization (Titration) reaction
b) Pink colour fades because HCl acid neutralises the alkaline effect of NaOH
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