İrem Firuze Küçük9-C 205

İHSAN DOĞRAMACI FOUNDATION

BİLKENT ERZURUM LABORATORY SCHOOL

2nd Semester

2011-2012 Academic Year

9th Grade Chemistry

LAB REPORT 1

Name: İrem Firuze Küçük

(Partner:Aysuda Pasinlioğlu)

Class: 9/C

Class Number: 205

Topic: Reaction of Vinegar with Bicarbonate of Soda

Date: 08.04.2012

İrem Firuze Küçük9-C 205

REACTION OF VINEGAR WITH BICARBONATE OF SODA

Purpose of the Experiment: To examine the release of CO2 with an neutralisation

experiment.

Hypothesis: As a result of neutralisation experiment, existence of CO2 will be

observed. (Taken advantage of Özge Öztürk)

THE CHEMICAL EQUATION

Acetic acid + Sodium Carbonate --> Sodium Acetate + Water + Carbon Dioxide

2 CH3COOH + Na2CO3 ----> 2 CH3COONa + H2O + CO2

Bicarbonate of soda is a chemical called sodium bicarbonate. Vinegar contains acetic

acid. We tested these two chemicals, and found that a solution of bicarbonate of

soda was alkaline, but vinegar was acidic.

The vinegar reacted with the sodium bicarbonate and neutralised it.

İrem Firuze Küçük9-C 205

We did an experiment to find out more about what happens when the acetic acid in

vinegar reacts with sodium bicarbonate.

List of Equipment:

A Balloon

2 beakers (60 ml)

Acetic Acid (nearly 50 ml)

Carbonate (40 ml)

Plastic Bottle

We all wore safety glasses to make sure nothing could splash in our eyes.

Procedure to Follow:

First of all, we prepared the

apparatus which we needed during

the experiment.

We measured the amount of acetic

acid by using beaker

We poured vinegar into the bottle

We measured the amount of

carbonate by using beaker.

We put the cone in the neck of the

balloon and tipped the sodium

bicarbonate carefully through the

cone into the balloon.

We filled the balloon with the

carbonate

Very carefully we stretched the

mouth of the balloon right over the

İrem Firuze Küçük9-C 205

mouth of the bottle, being careful not to spill any of the sodium bicarbonate

into the bottle.

Then we lifted the balloon completely

upright so that the sodium

bicarbonate inside the balloon poured

into the vinegar.

The balloon filled with CO2 , and we

observed that it expand or not.

Lastly, we compare the experiment

result with hypothesis.

Conclusion and Evaluation:

When sodium bicarbonate and vinegar mix, they react with each other and

one of the things that is made is carbon dioxide gas. The sodium bicarbonate and

vinegar fizzed and we saw lots of bubbles. We could see that a reaction was

happening. The reaction needs heat to make it happen, so it takes heat from its

surroundings, leaving the bottle feeling cold.The gas couldn't escape because it was

trapped by the balloon. As more and more gas was made, the balloon blew up.