1. Calculate the AH for the reaction 2S + 20F 2(g) SO + SF 4(g) (), using the following thermochemical reactions: OF + H,O + 2H,0 S. + Ozia) + 2HF, AH = -277 kJ - 2 (g) SF, + 4HF () AH = -828 kJ %3D AH = -297 kJ
1. Calculate the AH for the reaction 2S + 20F 2(g) SO + SF 4(g) (), using the following thermochemical reactions: OF + H,O + 2H,0 S. + Ozia) + 2HF, AH = -277 kJ - 2 (g) SF, + 4HF () AH = -828 kJ %3D AH = -297 kJ
Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry
Section: Chapter Questions
Problem 22.8QAP
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Transcribed Image Text:Activity 3.5
Solve the following.
1. Calculate the AH for the reaction 2S + 20F,
SO, o) + SF
4(9)
(),
2(g)
using the following thermochemical reactions:
OF,
+ H,Om
+ 0, la + 2HF,
(9)
AH = -277 kJ
2 (g)
+ 2H,0
+ 4HF,
AH = -828 kJ
>
AH = -297 kJ
S. + O2ig)
(0),
SO2 ()
2. Calculate the AH for the reaction S
2(g)
using these two reactions:
S + O2(a)
AH = -296.8 kJ
(s)
ャO2g)
2(g)
- 2SO )
AH = -197.0 kJ
2S0,
3 (g)
3. Calculate the AH for the reaction C,
(graphite)
+ 2H,
CHG
2g)
from the following enthalpy changes:
AH = -393.5 kJ
CO 20)
2H,0
Caraphile) + O20)
2(g)
(graphite)
AH = -571.6 kJ
2H,
+ 0,
2(g)
2(g)
AH = -890.4 kJ
CH,
+ 20,
+ 2H,0
CO.
2(g)
4(g)
2(g)
Conceptual Science and Beyond
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