Let’s Try to Understand “Rate of Reaction”

Let’s try to understand the factors affecting the rate of a chemical reaction.

We are going to check three factors: concentration, temperature, and surface area.

We are doing an experiment of Acetic acid available in vinegar with the Sodium bicarbonate of baking soda.

Acidic Acid (Ch3COOH) + Sodium bicarbonate (NaHCO3) -> CO2 (Carbon dioxide) + H2O (Water) + CH3COONa (Sodium Acetate)

What do we need?

  • 1-100 ml Bottle as a container to measure
  • 3-500 ml/600 ml used bottle
  • 7- medium sized balloon
  • 125 ml vinegar
  • 30 grams baking soda (approx 6 spoons)
  • 1 meter long ruler/scale

Procedure:

First Activity:

->Measure 25 ml Vinegar with the help of a 100 ml measuring bottle and pour it into the three 500/600 ml bottles.

 ->Take 25 ml water with the help of a 100 ml measuring bottle and pour it into the second bottle of vinegar.

->Take 50 ml water with the help of a 100 ml measuring bottle and pour it into the third bottle of vinegar.

->Take one tbsp (tablespoon) baking soda and put it in three balloons.

->Cover the bottle with the balloon in a way that baking soda drops into the solution of the bottles.

->Start the stopwatch and note the time when you see the balloons inflating (in each case).

->Measure the height of the inflated balloon and the time when balloons stop inflating (in each case).

->And write your observations.

Second Activity:

-> Empty the bottles of vinegar.

->Pour 25 ml vinegar in one bottle again.

->This time take two tbsp. baking soda and put it in one balloon.

->Cover the bottle with the balloon in a way that baking soda gets into the bottle.

->Start the stopwatch and note down the time when the balloon starts inflating and stops inflating.

->Measure the height of the inflated balloon.

->And write your observations.

Activity three:

->Heat the 25 ml vinegar for less than a minute and pour in one bottle (it should not melt the bottle).

->Take one tbsp. baking soda in one balloon

->Cover the bottle with the balloon in a way that baking soda drops into the solution of the bottle.

->Start the stopwatch and note down the time when the balloon starts and stops inflating.

->Measure the height of the inflated balloon.

->And write your observations

->How was your precipitate of Sodium acetate?

Choose one of these activities and don’t forget to record the video of your activity.

Post the web address of your youtube video here.

Comments

  1. Huad

    https://youtu.be/qMwP0CYx4FE

    Observation:
    -I think it is endothermic reaction because I try to touch it during the reaction and it feel cool.
    – During the reaction inside the bottles; it is bubbling.
    – Ballons inflated beacause of carbondioxide gas.

    Notes:
    I forgot to measure the size of 1st and 2nd balloons so I just write the size of it using adjectives.

    I didn’t do activity 3 because I already know what will happenned

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