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Blow up a balloon WITHOUT blowing it | Easy Science Experiments for Kids | Doctor Mad Science

Blow up a balloon WITHOUT blowing it

Vinegar is an acid so goggles must be warn. Also make sure you have adult supervision and a lot of paper towel.

purpose

To inflate the balloon without having to blow it up.

Materials

  • Baking soda
  • Vinegar
  • Balloon
  • 1 flask (any bottle will do)
  • 2 funnels ( dry and wet)

Procedure

  • Step 1: Put on your googles
  • Step 2: Using your funnel pour 1/2 cup of vinegar into your bottle/flask
  • Step 3: Using your other funnel pour 1/2 cup of baking soda into your balloon
  • Step 4: Wrap the opening of the balloon on the mouth of the bottle (You might have to ask an adult for help)
  • Step 5: When you are ready... tip the balloon so the baking soda pours into the bottle
  • Step 6: Watch the balloon EXPAND!!!

explanation

Vinegar contains ~5% acetic acid (CH3CO2H aka CH3COOH or AcOH in short) which reacts with a component in the baking soda, sodium bicarbonate (NaHCO3) to form carbonic acid (H2CO3). But carbonic acid is very instable and, in a decomposition reaction, forms carbon dioxide (CO2) and water (H2O). CO2 is a gas, meaning that the volume of the CO2 is much bigger than that of baking soda or vinegar, causing the CO2 to flow into the balloon.

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29 Comments on "Blow up a balloon WITHOUT blowing it"

  1. Lewis August 24, 2012 at 11:53 pm - Reply

    Try mixing banikg soda and vinegar.. those are two common household items. and it can be fun to watch what happens pour the vinegar into a container such as a empty water bottle, then pour about a handful of banikg soda onto a tissue paper and fold the tissue paper. when your ready, put the folded tissue paper into the water bottle, close the cap tight.. shake and throw, watch the explosion and have fun watch out for the kids though. I hope this helps, I remember doing this experiment at my school (you could also use this for a volcano!)References :

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