Rates of reaction experiment SPA

Click For Summary
SUMMARY

The forum discussion centers on a rates of reaction experiment involving acidified potassium iodide (KI) and hydrogen peroxide (H2O2) conducted during O levels science practical assessments. Participants emphasize the importance of accurately recording the total volume of solutions and the individual volumes of reactants to calculate concentrations effectively. The consensus is that while labeling the volume of distilled water specifically is not mandatory, ensuring all volumes are documented is crucial for clarity and accuracy in results.

PREREQUISITES
  • Understanding of chemical reaction rates and their measurement
  • Familiarity with titration techniques and volumetric analysis
  • Knowledge of how to calculate concentrations from volumes
  • Basic laboratory skills for conducting experiments safely
NEXT STEPS
  • Research the principles of reaction kinetics and factors affecting reaction rates
  • Learn about volumetric analysis techniques in chemistry
  • Study how to prepare and dilute solutions accurately
  • Explore methods for documenting experimental data effectively
USEFUL FOR

This discussion is beneficial for O level students, chemistry educators, and laboratory technicians involved in practical chemistry experiments and data analysis.

sgstudent
Messages
726
Reaction score
3
Hi today I took my O levels spa and the reaction was acidified KI+hydrogen peroxide. Once we see a slight colouration, we stopped timing the stopwatch. We were told to draw a tabulation box with the information in the experiment. Also we were told to clearly show the total volume of the solution before the additional if the second reactant (we diluted one of the reactants). However, I didn't put a heading as "volume of distilled water". Is that very important to write that down? I had only put volume of H2O2/cm3, volume of solution before KI was added/cm3, volume of KI/cm3 and time taken for blue colouration to appear/s. Thanks for the help!
 
Chemistry news on Phys.org
You need to know total volume to be able to calculate concentrations.
 
Hi Borek I did give the total volume of distilled water+reactants so that good enough?
 
If I understand you correctly, it doesn't matter - recording volume of water added for dilution and final volume is equivalent (assuming you correctly recorded volumes of all reagents).
 

Similar threads

Reaction Rate experiment: Potassium Permanganate and Hydrogen Peroxide
  • · Replies 3 ·
Replies
3
Views
3K
Electrolysis of Water -- Rate of Reaction?
  • · Replies 8 ·
Replies
8
Views
4K
How Can the Rate of One Reactant Reveal the Whole Reaction in Chemical Kinetics?
  • · Replies 7 ·
Replies
7
Views
3K
Can Na2PdCl4 be used as a substitute for PdCl2 in electroless copper plating?
  • · Replies 1 ·
Replies
1
Views
3K
Experiment about reaction times & result analysis
  • · Replies 2 ·
Replies
2
Views
1K
How do you determine the rate law for a reaction with KI and other reagents?
  • · Replies 8 ·
Replies
8
Views
4K
How Do You Calculate the Initial Rate of H2O2 Disappearance?
  • · Replies 1 ·
Replies
1
Views
4K
Chemistry How to Find Initial Moles of Reactants for Given Reaction | Moles Homework
  • · Replies 1 ·
Replies
1
Views
10K
Rate of Reaction: Calculating with Hydrogen Peroxide & Catalase
  • · Replies 5 ·
Replies
5
Views
4K
What Happens to Copper (II) Chloride Solution Under Different Conditions?
  • · Replies 3 ·
Replies
3
Views
5K