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Effect of Temperature on Rate of Reaction | Alka-Seltzer®

Effect of Temperature on
Rate of Reaction

01 Introduction

In order for a chemical reaction to occur, the particles, atoms or ions — which are reactants — must physically come into contact with one another. It’s WAY more interesting than it sounds. Trust us.

02 Materials:

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    6 Clear cups

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    Measuring cup (mL/oz)

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    Thermometer, -20 degrees C to 110 degrees C
    (-4 degrees F to 230 degrees F)

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    3 original formula effervescent Alka-Seltzer tablets

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    Stopwatch

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    Mortar and pestle

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    Source of hot water

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    Ice cubes

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    Graph paper

The effect of temperature on rate of reaction experiment materials

03 Procedure

Part A. Hot Water

1.

Run water from the hot tap until it is as hot as possible. Fill a clear glass with exactly 8 oz./240 mL of hot water.

2.

Use the thermometer to take the temperature and record it on your data sheet.

3.

Remove 1 Alka-Seltzer tablet from its package. Drop it into water. Measure the time required for tablet to fully dissolve. Be prepared to start and stop on time. The reaction will take less than 15 seconds. Record the time.

Alka-Seltzer dissolved in water of different temperatures

Part B. Room Temperature Water

1.

Fill a clear glass with exactly 8 oz./240 mL of room temperature or lukewarm water.

2.

Use the thermometer to take the temperature and record it on your data sheet.

3.

Drop 1 Alka-Seltzer tablet into the water. Measure the time required for the reaction to be completed. Record the time.

Part C. Cold Water

1.

Fill a clear glass with 4 oz./120 mL of water and add enough ice to adjust the level to 8 oz./240 mL. Stir the ice water for about 15 seconds so the temperature will come to equilibrium.

2.

Use the thermometer to take the temperature and record it on your data sheet. (Leave the ice cubes in the water!)

3.

Drop 1 Alka-Seltzer tablet into the water. Measure the time required for the reaction to be completed. Record the time.

04 CONCLUSION

Anything that increases the frequency of these encounters will increase the rate at which products are formed.

For relief of occasional heartburn

*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.