Hydrogen peroxide and manganese dioxide

In summary, the presence of catalase is the key factor in determining the rate of reaction between hydrogen peroxide and organic substances. The liver contains a higher concentration of catalase compared to potato, leading to a faster reaction. Additionally, the type of catalase present, whether from an animal or plant source, may also affect the reaction. However, this is not a significant factor in laboratory experiments. When comparing reactions between manganese dioxide and hydrogen peroxide and sand and hydrogen peroxide, the presence of catalase is still the main determining factor in the rate of reaction.
  • #1
student101
16
0
For the following two reactions: hydrogen peroxide and manganese dioxide, or hydrogen peroxidea and sand

- The MgO2 reacted faster - why?
- it has to have something to do with the presence of catalase.

Also, when i reacted potato with H2O2 and liver with H2O2, the liver caused a greater rate of reaction. Why?
 
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  • #2
student101 said:
Also, when i reacted potato with H2O2 and liver with H2O2, the liver caused a greater rate of reaction. Why?

What enzyme is present at great concentration in the liver? That should answer your question
 
  • #3
So essentially, since there is a greater concentration of the enzyme in liver than in potato, then the reaction will occur at a greater speed when with liver than with potato, right? Also:
How about reaction 1?
 
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  • #4
student101 said:
So essentially, since there is a greater concentration of the enzyme in liver than in potato, then the reaction will occur at a greater speed when with liver than with potato, right?

Yeah, the liver has greater amount of catalase compare to the potato and this would influence the kinetic of the reaction.

the condition might also influence the reaction. An animal catalase will work better at different conditions compare to the plant catalase. However, I do not think that the factor that influence the reation in you lab.
 
  • #5
But what about the reaction between manganese dioxide and hydrogen perxide vs. sand and hydrogen peroxide?
 

1. What is the chemical formula for hydrogen peroxide and manganese dioxide?

The chemical formula for hydrogen peroxide is H2O2, while the chemical formula for manganese dioxide is MnO2.

2. How are hydrogen peroxide and manganese dioxide used together?

Hydrogen peroxide and manganese dioxide are often used together in chemical reactions as an oxidizing agent. They can also be used in combination as a catalyst for certain reactions.

3. What are the physical properties of hydrogen peroxide and manganese dioxide?

Hydrogen peroxide is a clear, colorless liquid with a slightly bitter taste. It is miscible in water and has a boiling point of 150.2 °C. Manganese dioxide is a black or brown solid with a high melting point of 530 °C.

4. Are there any safety concerns when working with hydrogen peroxide and manganese dioxide?

Yes, both hydrogen peroxide and manganese dioxide can be hazardous if handled improperly. Hydrogen peroxide is a strong oxidizing agent and can cause skin and eye irritation, while manganese dioxide can irritate the respiratory system if inhaled. It is important to follow proper safety precautions when working with these chemicals.

5. Can hydrogen peroxide and manganese dioxide be found in nature?

Yes, both hydrogen peroxide and manganese dioxide can be found in nature. Hydrogen peroxide can be found in trace amounts in rain and snow, while manganese dioxide can be found in various minerals and ores.

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