Question

what do you understand by the term neutralisation?
describe an activity in which nutralisation of hydrochloric acid takes place with sodium hydroxide, using phenolphthalein as an indicator​

Answer 1

Answer:

The reaction between an acid and bases is called a neutralization reaction.

For the reaction between hydrochloric acid and sodium hydroxide, phenolphthalein is added as an indicator. Phenolphthalein is pink in sodium hydroxide. This change in colour indicates neutralisation.

Answer 2

Answer:

when acid and base react with each other they neutralizes each other and gives water and salt .HCl+NaOh=H2O+NaCl.after neutralization the solution doesn't change its colour when reacted with phenolphthalein because neutral have PH value 7 and on PH value 7 phenolphthalein is colorless .

Explanation:

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