How to Inflate a Balloon Using Baking Soda and Vinegar?

Do you want to learn how to inflate a balloon using baking soda and Vinegar? Students from mid-grades would love to adopt the experiment, of baking soda and vinegar, as a science project in their course. The experiment is a fun thing and it will also teach you the end result of the chemical reaction of Baking soda and vinegar.

Science Project – How to Inflate a Balloon Using Baking Soda and Vinegar?

The objective of this project is to illustrate the power of gas produced from the reaction of baking soda with vinegar.  The final goal is blown the balloon by the gas produced in the reaction. Do you think that baking soda will react with vinegar? Can you tell whether the gas produced will be powerful enough to blow up the balloon. Let’s stop asking anymore questions and proceed to our experiment.

Material required for the project.

Things needed for the project are listed below:

  1. A few balloons (1 required per experiment)
  2. Small beverage bottle
  3. Small Funnel
  4. 2 tablespoons of baking soda per experiment
  5. 4 ounces of vinegar


  1. Add 4 ounces of vinegar in an empty small bottle.
  2. Snug a funnel to the opening end of the balloon. Students can use the help of their classmates to hold the opening so it would become easy to insult the funnel to the balloon opening. Using the funnel, you then can add 2 tablespoons of baking soda into the balloon.
  3. Carefully put the balloon on the opening of the bottle, while keeping the baking soda block so that it wouldn’t be entering the bottle yet.
  4. Make sure there is no air space or opening. Students can tie a cotton string to make sure that the balloon is firmly fitted to the opening of the bottle.
  5. Hold the balloon upward and allow the baking soda to fall into the bottle.


Students needed to observe carefully what happened to the mixture of baking soda and vinegar.

  1. Do they react with each other?
  2. How much gas is produced in the reaction
  3. Does baking soda and vinegar reaction inflated the balloon.

Final result of the reaction of baking soda with vinegar

For the student’s knowledge, I will tell you what would happen in the reaction of baking soda and vinegar. Below is the chemical equation of the reaction of baking soda with vinegar.

NaHCO3(aq) + HC2H3O2(aq) → NaC2H3O2(aq) + H2O(l) + CO2(g)

Baking soda (sodium bicarbonate) is a base and vinegar (acetic acid) is an acid; therefore, the reaction of baking soda with vinegar is an acid-base reaction. To explain it in simple words, let’s list down the findings of the reaction.

  1. It is an acid-base reaction of baking soda with vinegar.
  2. Carbon dioxide will be produced in the reaction that will enter the balloon to inflate it.
  3. The mixture of baking soda will turn into an aqueous solution of water and sodium acetate.

What else you can do

Measure the size of the balloon inflated in the reaction. People can use different quantities of each of the components of the reaction. Students can try 4 tablespoons of baking soda with 8 ounces of vinegar and see if the balloon inflated is bigger than the one from the previous reaction. Just have fun with this science project or people can try another science project, i.e. Does Aspirin Helps Plants Grow Faster?

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