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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.