Describe an experiment to study a neutralization reaction.
Describe an experiment to study a neutralization reaction.
Aim: To study the reaction between acids and bases, that is neutralization reaction.
Materials required: Sodium hydroxide solution, phenolphthalein solution, dilute hydrochloric acid, red and blue litmus papers, a burette, a conical flask, a pipette, and a clamping stand.
Procedure:
(i) Take about 5 ml of dilute hydrochloric acid solution in a conical flask. Add a drop or two of phenolphthalein to it.
(ii) Take sodium hydroxide solution in a burette. Add this solution to the hydrochloric acid in the conical flask drop by drop with constant stirring.
Observation: A stage is reached when the solution in the conical flask just changes to pink.
(i) Divide the solution in the conical flask into two parts. To one add a blue litmus paper and to the other a red litmus paper.
Observation: There is no change in either of the litmus papers.
Conclusion: A neutralization reaction has taken place between the two reactants since the solution obtained is neither acidic nor basic in nature.
Aim: To study the reaction between acids and bases, that is neutralization reaction.
Materials required: Sodium hydroxide solution, phenolphthalein solution, dilute hydrochloric acid, red and blue litmus papers, a burette, a conical flask, a pipette, and a clamping stand.
Procedure:
(i) Take about 5 ml of dilute hydrochloric acid solution in a conical flask. Add a drop or two of phenolphthalein to it.
(ii) Take sodium hydroxide solution in a burette. Add this solution to the hydrochloric acid in the conical flask drop by drop with constant stirring.
Observation: A stage is reached when the solution in the conical flask just changes to pink.
(i) Divide the solution in the conical flask into two parts. To one add a blue litmus paper and to the other a red litmus paper.
Observation: There is no change in either of the litmus papers.
Conclusion: A neutralization reaction has taken place between the two reactants since the solution obtained is neither acidic nor basic in nature.
