lab report

Tittle : Investigation of the Enzymatic Effects of Materials on Hydrogen Peroxide Solution
Objective:
To investigates the enzymatic effect of various materials in the hydrogen peroxide solution. Table 1
Test
Tube
Contents with
5 cm3 hydrogen peroxide

Observations before and after using wood splint

Observation of after Observation of after adding hydrogen using wooden glowing peroxide splinter

1
Fresh liver

Moderate amount of effervescence is produced .
Pop sound is heard . The glowing splinter is ignited with violent flame and extinguished within 8 second as the glowing splinter is inserted . .
2
Boiled liver (cooled)

No effervescence is produced . No changes occur
No sound is heard . The glowing splinter is extinguished as the glowing splinter is inserted .
3
Pulped liver
High density of effervescence is produced vigorously .
Pop sound is heard .The glowing splinter is ignited with spark and violent flame and extinguished within 18 second . When the glowing splinter is pulled out , it rekindled .
4
Potato cubes
Moderate amount of effervescence is produced .
No pop sound is heard . The glowing splinter is ignited gently and extinguished within 3 second .
5
Manganese dioxide
(untreated)

Least effervescence is produced . The test tube is warm
Pop sound is heard . The glowing splinter is ignited with violent flame and extinguished within 20 second . When the glowing splinter is pulled out , it rekindled .
6
Boiled manganese dioxide (cooled after heating) Moderate amount of effervescence is produced .
Pop sound is heard . The glowing splinter is ignited with violent flame and extinguished within 7 second . When the glowing splinter is pulled out , it rekindled .

Discussion

The equation involved in this experiment is decomposition of hydrogen peroxide .

H2O2 ( liquid ) → H2O ( liquid ) + O2 ( gas )