• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The effect of catalase on hydrogen peroxide

Extracts from this document...

Introduction

The effect of catalase on hydrogen peroxide. Introduction What is the role of enzymes in a chemical reaction and what kind of the given substance contains more catalase than others? Materials * Raw potato * Boiled potato * Juice * Liver * Yeast * 5 tests tube * Match * Stick Results Items in test tube with hydrogen peroxide in them Order from fastest reacting to the slowest reacting yeast Reaction was fast, there was more bubble and the test tube became warm. Gas was formed and on testing it with a lit stick, it glows brighter. ...read more.

Middle

Stick doesn't glow Boiled potato No reaction and no bubbles formed. Stick doesn't glow. Conclusion Fresh living materials have enough catalase present in them. When exposed to hydrogen peroxide bubbles of gas are produce. The gas which was formed in the first three items was oxygen as when it was exposed to a glowing wooden stick it glows brighter. In the yeast and liver test tube more bubbles were formed vigorously because when yeast and liver is added to hydrogen solution, a decomposition reaction occurs, liberating oxygen gas as shown in the reaction below. ...read more.

Conclusion

This was due to absence of catalase in the juice and boiled potato. When the potato was boiled the catalase was denatured that's why it was missing in the potato. Evaluation It was hard to measure the 2cm3 of the H2O2 into the test tube since the measuring cylinder which was given was just calibrated 5 cm3 and 10 cm3. Due to that, a method of estimation was used which might have caused some errors. To develop this experiment I like to used the measuring cylinder which has the actual number to the required measured told. . ?? ?? ?? ?? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Chemistry essays

  1. Aim: Using an iodine clock reaction to find the order of hydrogen peroxide and ...

    This is especially significant for the experiments in which H2O2 was increased since these experiments were often marginally faster, meaning that this error could have resulted in an incorrect reading and thus an incorrect trend. Data Set Limitations Not significant since enough data was collected to conclude that H2O2 was first order and that CH3COOH was 0 order.

  2. DCP+CE Analysis of a Hydrogen Peroxide Solution

    in calculating average Amount of KMnO4 Trial 1 = 44.5 - 23.0 = 21.5 Trial 2 = 20.6 - 0.00 = 20.6 Trial 3 = 42.8 - 22.0 = 20.8 Trial 4 = 20.6 - 0.00 = 20.6 Average amount of KMnO4 used is 20.7ml � 0.15ml Uncertainty for calculating

  1. Investigate one factor affecting the rate of enzymatic decomposition of hydrogen peroxide by catalase. ...

    There was a direct relationship between the volume of the potato and rate of reaction and the rate of reaction increases with the size of the liver piece. In graph 2, the equation found out, y=0.0391x+0.077, with a R2 value of 0.9891 shows that the line of a increasing function.

  2. Decomposition of Hydrogen Peroxide Lab

    Finding Rate Constant at k= Sample Calculation-Temperature Uncertainty Temperature Range from to . Note: The trial shown in graph 4 was conducted at 4) Finding Rate Constant at Part Volume Molarity Volume Molarity Initial Rate (kPa/s) 4 4.00 0.88 M 1.0 0.5 M 0.4291 5) Finding Rate Constant at 6)

  1. THE CATALYTIC DECOMPOSITION OF HYDROGEN PEROXIDE

    Thus an asymptote would be formed at that point. Expected Graph: Variables: Independent Variable: Mass of manganese (V) oxide used. Dependent Variable: The time taken for the hydrogen peroxide to decompose. Control: Volume of hydrogen peroxide used (10cm3) Concentration of hydrogen peroxide (3%)

  2. Investigating Factors that Affect the Rate of Reaction of the Decomposition of Hydrogen ...

    Turn on a computer and start the LoggerPro Program. Connect the Gas Pressure Senor to Channel 1of the Vernier computer interface and with the correct cable attach the Vernier computer interface to the computer. Take the plastic tubing with the Leur-lock connectors at either end of the tubing, connect the tubing to the base on the one-hole rubber stopper

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work