Hydrogen Peroxide Lab

1528 words, 7 pages

Intro Sample...


The Effect of Hydrogen Peroxide on the Reaction Rate of the Enzyme Catalase

Variables:
Manipulated Variables:
* Different Concentration of Hydrogen Peroxide (0.1%, 0.2%, 0.3%, 0.4%, 0.5%)
Responding Variable:
* The reaction rate of the equation with catalase in the five different concentrations of hydrogen peroxide
Controlled Variables:
-Same amount of yeast (catalase)
-10mL of hydrogen peroxide in each test tube
-the paper disks were all the same
-all lab equipment was cleaned between each use to ensure no contamination of different percentages of hydrogen peroxide

Data Collection and Processing:

Qualitative Data:
-The hydrogen peroxide was a clear liquid with no particles in... View More »

Body Sample...


017481±(1.5287x10^-4) disk/s

0.3% Hydrogen Peroxide
Trial 1: (49.65)^-1=0.02014 disk/s
Uncertainty: 0.02014 disk/s x 0.01007%=2.028x10^-4
The reaction rate is 0.02014±(2.028x10^-4) disk/s
Trial 2: (48.47)^-1=0.0206 disk/s
Uncertainty: 0.0206 disk/s x 0.01032%=2.129x10^-4
The reaction rate is 0.0206±(2.129x10^-4) disk/s
Trial 3: (46.69)^-1=0.02142 disk/s
Uncertainty: 0.02142 disk/s x 0.01071%=2.294^-4
The reaction rate is 0.02142±(2.294x10^-4) disk/s

0.4% Hydrogen Peroxide
Trial 1: (39.07)^-1=0.02560 disk/s
Uncertainty: 0.02560 disk/s x 0.01800%=4.607x10^-4
The reaction rate is 0.02560±(4.607x10^-4) disk/s
Trial 2: (28.61)^-1=0.03495 disk/s
Uncertainty: 0.03495 disk/s x 0.01748%=6.110x10^-4
The reaction rate is 0.03495±(6.110x10^-4) disk/s
Trial 3: (42.67)^-1=0.02344 disk/s
Uncertainty: 0.02344 disk/s x 0.01172%=2.747x10^-4
The reaction rate is 0.02344±(2.747x10^-4) disk/s

0.5% Hydrogen Peroxide
Trial 1: (23.27)^-1= 0.0429 disk/s
Uncertainty: 0.0429 disk/s x0.02149%= 9.235x10^-4
The reaction rate is 0.0429±(9.235x10^-4) disk/s
Trial 2: (29.64)^-1=0.03374 disk/s
Uncertainty: 0.03374 disk/s x 0.01687%= 5.6916x10^-4
The reaction rate is 0.03374±(5.6916x10^-4) disk/s
Trial 3: (28.28)^-1=0.03536 disk/s
Uncertainty: 0.03536 disk/s x 0.01768%= 6.2518x10^-4
The reaction rate is 0.03536±(6.2518x10^-4) disk/s

Average reaction rate of the trials:
0.1 Hydrogen Peroxide:

Average rate= (Reaction rate of trial 1+ Reaction rate of trial 2= Reaction rate of trial 3)/3
((0.01522±(1.158x10^-3) disk/s)+ (0.01438±(1.2178x10^-4) disk/s)+ ...

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