Aim: To observe a neutralization reaction.
Equipment: A test tube, test tube rack, 1 mol L-1 Na2CO3 (sodium carbonate), 1 mol L-1 HCI (hydrochloride acid), dropper or dropper bottle, Universal indicator solution.
Method for neutralization:
- Get a test tube rack, b test tubes, acid, base and universal indicator.
- Fill 4 test tubes with 3 ml of acid.
- Fill 2 test tubes with 3 ml of base.
- Add a squirt of universal indicator to each.
- Add different amounts of acid and base to make the colors of the rainbow (ROYGBIV).
Results:
Discussion: Neutralization is a process when acids and bases react to form salt and water. In a reaction to water, neutralization results in excess of hydrogen or hydroxide ions present in the solution. The pH of the neutralized solution depends on the strength of acid or base involved in it. We made the colors of the rainbow green on the pH scale is in the middle which means its neutral. Red on the pH scale is a very strong base but for red its an acid. ROYGBIV stands for all the colors in the rainbow R stands for red, O stands for orange, Y stands for yellow, G stand for green, B stands for blue, I stands for indigo a purplish-blue and V standing for violet.
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