T = 23 The expression you should be evaluating for the number of moles (nn) is: n=PV/RT Where: P is in atm V is in L T is in K R = 0.0820574 L atm / mol K need 6 sig figs
T = 23 The expression you should be evaluating for the number of moles (nn) is: n=PV/RT Where: P is in atm V is in L T is in K R = 0.0820574 L atm / mol K need 6 sig figs
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter6: The Gaseous State
Section: Chapter Questions
Problem 6.18QE
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Question
T = 23
The expression you should be evaluating for the number of moles (nn) is:
n=PV/RT
Where:
- P is in atm
- V is in L
- T is in K
- R = 0.0820574 L atm / mol K
need 6 sig figs
Transcribed Image Text:Using Figure 1 as reference, please complete the table below.
Remember that the volume of gas in your buret includes the uncalibrated volume of your buret and the volume that results from
subtracting the direct volume reading from 25.00 mL.
Trial #
1
2
3
V₁ (mL)
0.401989
0.401989
0.401989
Where:
x(mL)
11.00
10.00
10.00
V
gas = 25.00 − x +Vu
Vgas = Volume of gas in the buret (mL)
* = Final buret reading at the end of electrolysis time (mL)
V₁ = Volume of uncalibrated region of the buret (mL)
Gas constant = 0.0820574 L atm/mol K
Unrounded
14.40198
15.40198
Vgas (ml)
15.40198
Rounded
14.40
15.40
15.40
Moles of H₂ evolved
Unrounded
999
3
3
Rounded
P
3
3
3
Transcribed Image Text:Temperature (°C)
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Vapor Pressure (mm Hg)
12.8
13.6
14.5
15.5
16.5
17.5
18.6
19.8
21.1
22.4
23.8
25.2
26.7
28.3
30.0
31.8
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