Determination of the Ideal Gas Constant Answer Sheet
Use the following space to write a procedure that details the steps you took to perform the experiment. This should be done in paragraph form using complete sentences. Remember that lab procedures are written in third person passive voice. If you need help with this style see here: https:
guides.lib.purdue.edu/c.php?g=352816&p=2377936
Part 1
Data Table 1
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
Trial 6
Trial 7
Trial 8
Air temperature
23 C
23 C
23
23
23
23
23
23
Volume H2O2 liquid (mL)
1 ml
1 ml
2
2
3
3
4
4
Initial Volume Gas (mL)
28 ml
28ml
28
28
28
28
28
28
Final Volume Gas (mL)
31 ml
30 ml
35
36
42
40
47
49
ΔV (mL)
3 ml
2 ml
7
8
14
12
19
21
1. Would the volume of oxygen that is generated by affected if a smaller mass of yeast were used? Why or why not? Yes because there is still going to be a chemical reaction that occurs between the yeast and hydrogen peroxide. It may not be a large reaction but it will occur.
Part 2
Data Table 2
Concentration H2O2
3%
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
Trial 6
Trial 7
Trial 8
Moles H2O2
1.020 moles
1.020
2.040
2.040
3.061
3.061
4.081
4.081
Moles O2
.186
.125
.438
.500
.875
.750
1.18
1.313
ΔV (L)
.003
.002
.007
.008
.014
.012
.019
.021
Air Temperature (K)
296
Air Pressure (atm)
1 atm
Equation of the Line
Y=.0163x
Gas Constant R
Percent E
o
2. Show calculation of molarity of H2O2.
3. Show calculation of moles H2O2.
4. Show calculation of moles O2
5. Insert graph of moles O2 vs. volume of gas (make sure to set intercept to 0 and include equation on graph.)
6. Show calculation value of R.
7. Show calculation of % e
or of R.
8. Identify at least two potential sources of e
or in the experiment. Are any assumptions made that would add to the experimental e
or?