Science Experiment blog #2

 

Science Blog - #2

Aim: To observe a neutralisation 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 neutralisation:

- 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 colours of the rainbow (ROYGBIV).

Results:

Discussion: Neutralisation is a process when acids and bases react to form salt and water. In a reaction to water, neutralisation results in excess of hydrogen or hydroxide ions present in the solution. The pH of the neutralised solution depends on the strength of acid or base involved in it. We made the colours 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 colours 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.