6. The heat of formation of Fe2O3(s) is -826.0 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 30₂(g) →→2Fe₂O3(s) when a 43.20-g sample of iron is reacted. [n)

Chemistry for Engineering Students
3rd Edition
ISBN:9781285199023
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter11: Chemical Kinetics
Section: Chapter Questions
Problem 11.61PAE
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Question

How would you answer question 6?

ΔΗ† of CO
A)-348.3
B) 116.8
C) 227.8
D) 93.7
E)-93.7
-110.5 kJ/mol)
PHA brit of HA qu mue brie selsiberme
127.3=2(+110.5) +0] - ×
X
a. I
0121HA JomLY 2010 (8) HAL
(lomitat 8.1
3.ras-= ((0)
TOXOSHITHA
6. The heat of formation of Fe2O3(s) is -826.0 kJ/mol. Calculate the heat of the reaction
4Fe(s) + 30₂(g) →→2Fe₂O3(s) when a 43.20-g sample of iron is reacted.
t
43.200 0.00 0.7736mal Fe
-826.0 kJ/mol = (0.7736 mol) [2(-826)
15
Stevo bist
sril gnipellop ons blos ohut
w (helsqlles bollso) slain muiboa ge
painuado vilamuden prites
HA bris collemot to gaisris
(g)COMH
niwe
. For which of the following reaction(s) is the enthalpy change for the reaction not equal to AH
roduct?
d.c.
KOTO
(8
I. 2H(g) → H₂(g)
II.
H₂(g) + O₂(g) → H₂O₂(1)
III. H₂O(1) + O(g) → H₂O₂(1) 1 [cc-) (101-
fortul 1.act-=[COMHTHA tonLX
(e)MOBHsM-([02SH-(e)COMM
KTHA A en
[0 OH
2
Transcribed Image Text:ΔΗ† of CO A)-348.3 B) 116.8 C) 227.8 D) 93.7 E)-93.7 -110.5 kJ/mol) PHA brit of HA qu mue brie selsiberme 127.3=2(+110.5) +0] - × X a. I 0121HA JomLY 2010 (8) HAL (lomitat 8.1 3.ras-= ((0) TOXOSHITHA 6. The heat of formation of Fe2O3(s) is -826.0 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 30₂(g) →→2Fe₂O3(s) when a 43.20-g sample of iron is reacted. t 43.200 0.00 0.7736mal Fe -826.0 kJ/mol = (0.7736 mol) [2(-826) 15 Stevo bist sril gnipellop ons blos ohut w (helsqlles bollso) slain muiboa ge painuado vilamuden prites HA bris collemot to gaisris (g)COMH niwe . For which of the following reaction(s) is the enthalpy change for the reaction not equal to AH roduct? d.c. KOTO (8 I. 2H(g) → H₂(g) II. H₂(g) + O₂(g) → H₂O₂(1) III. H₂O(1) + O(g) → H₂O₂(1) 1 [cc-) (101- fortul 1.act-=[COMHTHA tonLX (e)MOBHsM-([02SH-(e)COMM KTHA A en [0 OH 2
Expert Solution
Step 1

The given reaction is as follows:

4Fe(s) + 3O2(g)  2Fe2O3(s)

The heat of formation of Fe2O3(s) = -826.0 kJ/mol

The mass of iron = 43.20 g

Heat of reaction = ?

 

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