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Transcript

Citric Acid and Baking Soda

By Henry Rogers, Dougie Neviera, Caleb Osemobor, and Willie Turchetta

The Experiment

  • The Experiment was to combine a mixture of citric acid and baking soda to experience the chemical reaction
  • We tested this and used the baking soda as a variable: (15g to 30g)
  • The reaction was that the two substances combined to create an endothermic reaction

Hypothesis

  • Our Hypothesis for this experiment was that when we doubled the amount of baking soda, the temperature would drop to a colder temperature than it would in the controlled experiment.

Balanced Equation:

Endothermic Reactions

3

6

5

7

3

2

3

6

5

7

  • The equation for the reaction is: H C H O (aq) + 3 NaHCO (s) → 3CO (g) + 3 H O(l) + Na C H O (aq)
  • This shows the law of conservation of mass (no mass can be gained or lost but repositioned)

The equation is balanced because it has the same amount of hydrogen, carbon, oxygen, and nitrogen atoms on the reactant's side as the product's side

  • Endothermic reactions occur when atoms take away energy from the substance it is reacting with.
  • Because energy, more specifically thermal energy, is taken away the substance gets colder
  • Baking Soda and Citric Acid because when the sodium bicarbonate and the citric acid come ni contact they use too mu energy for each other and lose it, therefore making it colder

Citric Acid and Baking Soda Reaction

The Graph

Results:

  • The results ended in the controlled experiment being colder with a temperature of 16.5 degrees celsius and the experimental (30g of baking soda) ending in a temperature of 17.3 degrees celsius
  • Our Hypothesis ended up being the opposite of what occurred during this experiment, with the experimental staying at a higher temperature than the controlled.

Video

This Reaction occurred because of an endothermic reaction, which has to do with thermal energy... Next slide has more

Citric Acid and Baking Soda

An Endothermic Reaction

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