![webbjalia04](/avatars/49042.jpg)
webbjalia04
15.04.2020 •
Chemistry
Given the following data: Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) ΔH = −23 kJ 3 Fe2O3(s) + CO(g) → 2 Fe3O4(s) + CO2(g) ΔH = −39 kJ Fe3O4(s) + CO(g) → 3 FeO(s) + CO2(g) ΔH = +18 kJ calculate ΔH for the reaction FeO(s) + CO(g) → Fe(s) + CO2(g).
Solved
Show answers
More tips
- C Computers and Internet How to Properly Repartition a Hard Drive?...
- A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Chemistry
- B Biology 02.03 Early Cells Biology 1a 2020 sec 1 Delta / Module 02: Li- S SUBMISSION OBJECTIVES e assignment following the instructions in the lesson....
- P Physics In a particular crash test, an automobile of mass 1577 kg collides with a wall and bounces back off the wall. The x components of the initial and final speeds of the automobile...
- M Mathematics Need of help on this question...
- M Mathematics Can someone pleaseee help...
Ответ:
ΔH° = -11 kj
Explanation:
Step 1: Data given
1) Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) ΔH = −23 kJ
2) 3 Fe2O3(s) + CO(g) → 2 Fe3O4(s) + CO2(g) ΔH = −39 kJ
3) Fe3O4(s) + CO(g) → 3 FeO(s) + CO2(g) ΔH = +18 kJ
Step 2: The balanced equation
FeO + CO → Fe + CO2
Step 3: Calculate ΔH for the reaction FeO(s) + CO(g) → Fe(s) + CO2(g).
To get this equation, we need to combine the 3 equations
We have to multiply the third equation by 2.
2Fe3O4(s) + 2CO(g) → 6 FeO(s) + 2CO2(g) ΔH = +54 kJ
This equation we add to the second equation
3Fe2O3(s) + CO(g) + 2Fe3O4(s) + 2CO(g) → 2Fe3O4(s) + CO2(g) + 6FeO(s) + 2CO2 (g)
3Fe2O3(s) + 3CO(g) → 3CO2(g) + 6FeO(s)
ΔH° = 2*18 + (-39) = 36 - 39 = -3 kJ
This new equation we will divide by 3
3Fe2O3(s) + 3CO(g) → 3CO2(g) + 6FeO(s)
Fe2O3(s) + CO(g) → CO2(g) + 2FeO(s)
ΔH° =-3/3 = -1 kJ
Now we will substract this new equation from the first equation
Fe2O3(s) + 3CO(g) - Fe2O3(s) - CO(g) → 2Fe(s) + 3CO2(g) -2FeO(s) - CO2(g)
2CO(g) + 2FeO(s) → 2Fe(s) + 2CO2(g)
ΔH° = -23kJ +1kJ
ΔH° = -22 kj
The next equation we will divide by 2
2CO(g) + 2FeO(s) → 2Fe(s) + 2CO2(g)
CO(g) + FeO(s) → Fe(s) + CO2(g)
ΔH° = -22kJ /2
ΔH° = -11 kj
Ответ: