Skip to main content
  • GO TO ALKASELTZER PLUS®
  • CONTACT US
Switch Language
  • English
  • Spanish
Home
  • Product Finder
    family shot of alka-seltzer effervescent and reliefchews products
    • ReliefChews®
      • Extra Strength Heartburn ReliefChews
      • Heartburn+Gas ReliefChews
        test
      • Kids Tummy ReliefChews
    • Gummies
      • PM Heartburn Relief + Sleep Support* Gummies
    • Effervescent
      • *NEW* Energy Boost
      • Hangover Relief
      • Original Flavor Effervescent Tablets
      • Heartburn Relief Extra Strength Effervescent Tablets
      • Heartburn Relief Lemon Lime Effervescent Tablets
      • Gold Effervescent Tablets
  • Food, Fun & 411
    • Heartburn 101
    • Food First
    • Heartburn & Pregnancy
    • FAQS
  • Science Experiments
    • DIY Experiments
      • Temperature vs. Rate of Reaction
      • Size vs. Rate of Reaction
      • Chemistry of Color
      • Bubbles, Gas and Balloons
      • Alka Rockets
    • Advanced Experiments
      • Concentration vs. Rate of Reaction
      • Pressure vs. Rate of Reaction
      • How Alka-Seltzer Works in Your Stomach
  • Coupons
Bayer Cross Logo

EFFECT OF TEMPERATURE ON RATE OF REACTION

Share on:

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

» 6 Clear cups

» Measuring cup (mL/oz)

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

» 3 original formula effervescent Alka-Seltzer tablets

» Stopwatch

» Source of hot water

» Ice cubes

» Graph paper

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. 

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

  1. 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. 

Part B. Room Temperature Water

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

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

  2. 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. 

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

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

Measuring the rate of change

04 CONCLUSION

Anything that increases the frequency of the particles encountering/colliding with one another (such as heat) will increase the rate of the reaction itself, in this case – the dissolution/fizzing of the tablets 

 

Alka Seltzer logo
  • Product Finder
  • Food, Fun & 411
  • Science Experiments
  • Contact Us
  • Sitemap
  • ReliefChews
    • Extra Strength Heartburn ReliefChews
    • Heartburn + Gas Heartburn ReliefChews
    • Kids Tummy ReliefChews
  • Gummies
    • PM Heartburn Relief + Sleep Support* Gummies
    • Heartburn Relief* Gummies
  • Effervescent
    • *NEW* Energy Boost
    • Hangover Relief
    • Original Flavor Effervescent Tablets
    • Heartburn Relief Extra Strength Effervescent Tablets
    • Heartburn Relief Lemon Lime Effervescent Tablets
    • Gold Effervescent Tablets

©2023. All rights reserved. Unless otherwise indicated, all trademarks are owned by Bayer, and its affiliates, or licensed for its use.

USE AS DIRECTED.

  • Bayer Global
  • Bayer US
  • Bayer Consumer Health
  • Conditions of Use
  • Privacy Statement
  • Imprint
  • California Transparency in Supply Chains
  • Satisfaction Guarantee
  • AdChoices
  • Do not sell or share my Personal Data
  • Accessibility

Accessibility icon