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How can the effect of changing the mass of a catalyst on the rate of a reaction be investigated?
You can investigate what happens if you use more catalyst for the decomposition of hydrogen peroxide solution reaction. You will set the experiment up by connecting a gas syringe to a conical flask and adding the required substances into the flask. You will then record the time taken to produce a certain amount of gas in the syringe.
Safety!
Make sure you wear eye protection at all times.
You will need:
100 cm3 conical flask attached to a 100 cm3 gas syringe
bung
stop clock
hydrogen peroxide solution
measuring cylinder
powdered manganese dioxide (harmful)
top pan balance
eye protection
Method
Weigh out 0.5 g of manganese dioxide powder into the conical flask.
Add 50 cm3 of hydrogen peroxide solution and insert the bung. Start the clock straight away and swirl the flask once to mix the powder and the liquid.
Twist the plunger of the gas syringe gently to stop it sticking.
Measure the time taken for 50 cm3 of gas to be produced.
Look carefully at the liquid left in the flask. Has the catalyst disappeared?
Repeat the experiment using a different amount of manganese dioxide. The amounts you should use are given in the table. Remember to swirl the flask by the same amount every time.
Results
mass of catalyst
(in g)
time taken to produce 50 cm3 of gas
(in seconds)
0.5 g
1.0 g
1.5 g
2.0 g
Analysing Results
Plot a graph of the time taken against the mass of catalyst to see any patterns or trends in your results.
Answer this question…
What else can I help you with?
What effect does a catalyst have?
A catalyst speeds up a chemical reaction by lowering the activation energy required for the reaction to occur. It does so by providing an alternative reaction pathway that requires less energy to initiate the reaction. The catalyst itself remains unchanged at the end of the reaction and can be used over and over again.
What effect does the porous pot catalyst have on the reaction?
s
What net effect does a chemical reaction have on a catalyst?
None: The catalyst remains unchanged, but the catalyst also speeds up the reaction.
What effect does the catalyst have on a reaction?
A catalyst works by essentially speeding up the rate of reaction or changing other environmental factors, such as increasing yield. Although this is technically not the mechanism by which catalysts usually work, it's a sufficient idea of how catalysts benefit reactions.
Effect of catalyst on the rate of reverse step?
A catalyst increases the reverse rate of the reaction
What effect does catalyst on a reaction?
A catalyst speeds up the rate of a reaction.
What effect does a catalyst having a reaction?
A catalyst speeds up the rate of a reaction.
How does catalyst effect chemical change?
A catalyst alters the rate of a chemical reaction.
What effect does a catalyst have?
A catalyst speeds up a chemical reaction by lowering the activation energy required for the reaction to occur. It does so by providing an alternative reaction pathway that requires less energy to initiate the reaction. The catalyst itself remains unchanged at the end of the reaction and can be used over and over again.
What effect does the porous pot catalyst have on the reaction?
s
What net effect does a chemical reaction have on a catalyst?
None: The catalyst remains unchanged, but the catalyst also speeds up the reaction.
What are the effect of a catalyst on a chemical reaction?
A properly chosen, specific catalyst is able to speed up the rate of a particular chemical reaction
What is the effect of a catalyst on a chemical reaction?
To Cause a Chemical reaction. A properly chosen, specific catalyst is able to speed up the rate of a particular chemical reaction.
What is the effect of a catalyst on the required energy to acheieve effective collisions?
A catalyst lowers the activation energy of a reaction.
Can a catalyst have any effect on the reaction rate?
Yes,catalysts help the reaction go faster.
What effect does the catalyst have on a reaction?
A catalyst works by essentially speeding up the rate of reaction or changing other environmental factors, such as increasing yield. Although this is technically not the mechanism by which catalysts usually work, it's a sufficient idea of how catalysts benefit reactions.
Effect of catalyst on the rate of reverse step?
A catalyst increases the reverse rate of the reaction
