FeO + OR_{2}THEREFORE_{4 }→ Fe_{2}(THEREFORE)_{4})_{3} + SO_{2} + FRIENDS_{2}O is a redox reaction compiled by Soc Trang High School, this equation will appear in the content of the lesson: Balancing redox reactions Chemistry 10, Chemistry 12: Lesson 32 Compounds of iron.. .. as well as exercises.

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## 1. Equation of the reaction FeO reacts with H_{2}THEREFORE_{4 }special

### 2FeO + 4H_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3} + SO_{2}+ 4 HOURS_{2}UMBRELLA

## 2. FeO + H balance. reaction_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3} + SO_{2} + FRIENDS_{2}UMBRELLA

Fe+2O + OR_{2}S+6O_{4} → +3Fe_{2}(THEREFORE)_{4})_{3} + S+4O_{2} + FRIENDS_{2}UMBRELLA

You are viewing: FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

double 1x |
Fe+2 → Fe+3 +1e S+6 + 2e → S+4 |

2FeO + 4H_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3 }+ SO_{2}+ 4 HOURS_{2}UMBRELLA

## 3. Reaction conditions FeO reacts with H . solution_{2}THEREFORE_{4 thick hot}

Do not have

## 4. How to conduct the reaction for FeO to react with H . solution_{2}THEREFORE_{4 thick hot}

Let FeO react with sulfuric acid solution H_{2}THEREFORE_{4 thick hot}

## 5. Chemical Phenomena

When FeO reacts with acidic solution H_{2}THEREFORE_{4} products that give iron(III) sulfate salts and have

sulfur dioxide gas with a pungent odor is released.

## 6. Chemical properties of FeO

Iron (II) compounds have both reducing and oxidizing properties, but the reducing property is more specific, because in chemical reactions Fe2+ ions easily yield 1e to Fe3+ ions:

Fe2+ + 1e → Fe3+

- The characteristic property of iron(II) compounds is reduction.

Iron(II) compounds are usually unstable and easily oxidized to iron(III) compounds.

FeO is a basic oxide, in addition, due to oxidation number +2 – intermediate oxidation number => FeO has reducing and oxidizing properties.

- FeO is a basic oxide:

Reaction with acidic solutions: HCl; H_{2}THEREFORE_{4} wash…

FeO + 2HCl → FeCl_{2} + FRIENDS_{2}

FeO + OR_{2}THEREFORE_{4 dilution }→ FeSO_{4} + FRIENDS_{2}UMBRELLA

- FeO is an oxidizing agent when reacted with a strong reducing agent: H
_{2,}CO, Al → Fe

FeO + OR_{2}Fe + H_{2}UMBRELLA

FeO + CO Fe + CO_{2}

3FeO + 2Al Al_{2}UMBRELLA_{3} + 3Fe

- FeO is a reducing agent when reacting with a strong oxidizing agent: HNO
_{3}; H_{2}THEREFORE_{4 special}; UMBRELLA_{2}…

4FeO + O_{2} 2Fe_{2}UMBRELLA_{3}

3FeO + 10HNO_{3 dilution} → 3Fe(NO.)_{3})_{3} + NO + 5 HOURS_{2}UMBRELLA

FeO + 4HNO_{3 thick, hot }→ Fe(NO.)_{3})_{3} + NO_{2} + 2 SMALL HOUSES_{2}UMBRELLA

2FeO + 4H_{2}THEREFORE_{4 thick, hot }→ Fe_{2}(THEREFORE)_{4})_{3} + SO_{2} + 4 HOURS_{2}UMBRELLA

## 7. Related Exercises

Question 1. Let 7.2 grams of FeO react completely with H . acid solution_{2}THEREFORE_{4} hot, after the reaction, V liters of SO are obtained. get gas_{2} (single reduction product, dktc). The value of V is:

A. 1.12 liters

B. 2.24 liters

C. 3.36 liters

D. 4.48 liters

Answer A

WOMEN_{FeO} = 0.1 mol

Reaction Equation:

2FeO + 4H_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3} + SO_{2}+ 4 HOURS_{2}UMBRELLA

0.1 → 0.05 mol

WOMEN_{SO2} = 1/2 n_{FeO} = 0.05 mol => V_{SO2} = 0.05.22.4 = 1.12 liters

Question 2. Which of the following compounds does not react with H?_{2}THEREFORE_{4} thick cold?

A. Cu, Al, Fe

B. Al, Fe, Cr

C. Fe, Cu, Ag

D. Cr, Cu, Fe

The answer is no

Which of the following series of substances does not react with cold concentrated H2SO4: Al, Fe, Cr

Question 3. Which of the following ores has the highest Fe content?

A. Red Hematite

B. Pirit

C. Manheti

D. Siderit

OLD ANSWERS

A. Red hematite (Fe_{2}UMBRELLA_{3}).

. %m_{Fe}= (2.56)/(2.56 +3.16).100% = 70%

B. Pyrite (FeS_{2}).

%m_{Fe }= 56/(56 + 2.32).100% = 46.67%

C. Manhetite (Fe_{3}UMBRELLA_{4}).

%m_{Fe} = 3.56/(3.56 + 4.16).100% = 72.41%

D. Ciderite (FeCO_{3}).

%m_{Fe} = 56/(56 + 12 + 16.3).100% = 48.28%

So the ore with the highest Fe content is Fe._{3}UMBRELLA_{4}

Question 4. Which of the following substances reacts with Fe without forming Fe(III) compounds?

A. OR solution_{2}THEREFORE_{4 thick hot}

B. HNO . solution_{3 dilution}

C. AgNO solution_{3} residual

D. concentrated HCl solution

EASY ANSWER

A. OR solution_{2}THEREFORE_{4} hot

2Fe + 6H_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3} + 3SO_{2}+ 6 HOUSES_{2}UMBRELLA

B. HNO . solution_{3} wash

Fe + 4HNO_{3} → Fe(NO.)_{3})_{3} + NO + 2 HOUSES_{2}UMBRELLA

C. AgNO solution_{3} residual

Fe + 3AgNO_{3} → Fe(NO.)_{3})_{3} +3Ag

D. concentrated HCl solution

Fe + 2HCl → FeCl_{2} + FRIENDS_{2}

So reaction D produces iron salt II

Question 5. Let 5.4 grams of metal A completely dissolve in H_{2}THEREFORE_{4} hot, after the reaction is completed, 6.72 liters of SO is obtained. get gas_{2} (only reduction product, at tc). That metal A is:

A. Fe

B. Al

C.Zn

D. Cu

The answer is no

Number of moles of SO_{2} Okay:

WOMEN_{SO2} = V/22.4 = 6.72/22.4 = 0.3 (mol)

What is the reaction equation?

2R + 2nH_{2}THEREFORE_{4}(d) → CHEAP_{2}(THEREFORE)_{4})n + nSO_{2}+ 2nH_{2}UMBRELLA

0.6/n 0.3

The molar mass of R is:

USA_{CHEAP} = m/n = 5.4/0.6/n = 9n

debatable

R is aluminum metal

Question 6. The main composition of hemantite ore is:

A. Fe_{3}UMBRELLA_{4}

B. Fe_{2}UMBRELLA_{3}

C. FeS_{2}

D. Al_{2}UMBRELLA_{3}

The answer is no

The main component of hemantite ore is Fe._{2}UMBRELLA_{3}.

Magnetite ore: Fe_{3}UMBRELLA_{4}

Iron pyrite ore: FeS_{2}

Bauxite ore: Al_{2}UMBRELLA_{3}.

Question 7. A hemantite ore with 80% Fe_{3}UMBRELLA_{4} used to produce cast iron containing 95% iron. If the efficiency of the reaction is 80%, then the mass of iron obtained from 150 tons of magnetite ore is

A. 63.81 tons

B. 71.38 tons

C. 73.18 tons

D. 78.13 tons

OLD ANSWERS

mass Fe_{3}UMBRELLA_{4} in 150 tons of ore is: (80,150)/100 = 120 tons

Mass of Fe in 120 tons of Fe_{3}UMBRELLA_{4}: (120,168)/100 = 86.9 tons

The volume of cast iron obtained: (86,9,100)/95.(80/100) = 73.18 tons

Question 8. For 5.4 grams of a mixture of 2 metals Fe and Zn, react completely with 90 ml of 2M HCl solution. The mass of salt obtained is

A. 11.79 grams

B. 11.5 grams

C. 15.71 grams

D. 17.19 grams

Answer A

WOMEN_{HCl} = 0.09. 2 = 0.18 (mol)

reaction equation

Zn + 2HCl → ZnCl_{2} + FRIENDS_{2}

Fe + 2HCl → FeCl_{2} + FRIENDS_{2}

From (1) and (2) n_{H2} = 1/2n_{HCl} = 0.09 (mol)

According to the law of conservation of mass we have:

I _{mixture} + m _{acid} = m _{salt} + m _{hydrogen}

=> m _{salt} = 5.4 + 0.18.36.5 – 0.09.2 = 11.79 grams

Question 9: Dissolve an iron oxide in H. solution_{2}THEREFORE_{4} dilute solution X

Divide solution X into 2 equal parts:

Part 1: Add a little Cu and see that it is completely dissolved and the solution is blue

Part 2: Add a few drops of KMnO solution_{4} color loss.

iron oxide is

A. FeO.

B. Fe_{3}UMBRELLA_{4}.

C. Fe_{2}UMBRELLA_{3} .

D. FeO or Fe_{2}UMBRELLA_{3}.

The answer is no

Solution X reacts with Cu → solution X contains Fe3+ . ions

Solution X reacts with KMnO_{4} → solution X contains Fe2+ ions

So iron oxide has the formula Fe_{3}UMBRELLA_{4}.

Question 10: Dissolve Fe_{3}UMBRELLA_{4} into HCl solution to get solution X. Divide X into 3 parts:

Add excess NaOH to part 1 to precipitate Y. Take Y out into the air.

Add Cu powder to part 2.

Strength Cl_{2} into part 3.

In the above processes, the number of oxidation – reduction reactions is .

A.2.

B.3.

C.4.

D.5.

The answer is no

Fe_{3}UMBRELLA_{4} + 8HCl → FeCl_{2} + 2FeCl_{3} + 4 HOURS_{2}Box (1)

Part 1:

FeCl_{2} + 2NaOH → Fe(OH)_{2} + 2NaCl (2)

FeCl_{3} + 3NaOH → Fe(OH)_{3} + 3NaCl (3)

4Fe(OH)_{2} + Oh_{2} + 2 SMALL HOUSES_{2}O → 4Fe(OH)_{3} (4)

Part 2:

2FeCl_{3} + Cu → 2FeCl_{2} + CuCl_{2} (5)

Part 3:

2FeCl_{2} + Cl_{2} → 2FeCl_{3} (6)

The redox reactions are: (4), (5), (6).

Question 11. Which of the following statements is correct?

A. Cast iron is an alloy of iron with carbon and some other elements, in the composition of carbon accounting for 2 to 5%.

B. Cast iron is an alloy of iron with carbon and some other elements, in a carbon content greater than 5%.

C. Cast iron is an alloy of aluminum with carbon and some other elements, in the composition of carbon accounting for 2 to 5%.

D. Cast iron is an alloy of aluminum with carbon and some other elements, in which the carbon content is greater than 5%.

Answer A

Cast iron is an alloy of iron with carbon and some other elements, in the composition of carbon accounting for 2 to 5%.

Question 12. A hemantite ore with 80% Fe_{3}UMBRELLA_{4} used to produce cast iron containing 95% iron. If the efficiency of the reaction is 80%, then the mass of iron obtained from 150 tons of magnetite ore is

OLD ANSWERS

mass Fe_{3}UMBRELLA_{4} in 150 tons of ore is: (80,150)/100 = 120 tons

Mass of Fe in 120 tons of Fe_{3}UMBRELLA_{4}: (120,168)/100 = 86.9 tons

The volume of cast iron obtained: (86,9,100)/95.(80/100) = 73.18 tons

Question 14. Perform experiments on the following reaction:

(1) Burning iron wire in Cl. gas_{2} residual

(2) Add Iron to HNO. solution_{3} thick, cold

(3) Put the iron rod in dilute HCl solution, excess

(4) Add iron to H solution_{2}THEREFORE_{4} dilution, excess

(5) Add iron to H solution_{2}THEREFORE_{4} thick, hot

The number of experiments to create Fe(II) salt is:

A. 3

B 4

C. 2

D.1

OLD ANSWERS

2Fe + 3Cl_{2} → 2FeCl_{3}

Fe + HNO_{3 special cold dishes} → no response

Fe + 2HCl → FeCl_{2} + FRIENDS_{2}

Fe + H_{2}THEREFORE_{4} → FeSO_{4} + FRIENDS_{2}

2Fe + 6H_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3} + 3SO_{2} + 6 HOUSES_{2}UMBRELLA

Question 15. Add a gram of Zn powder to 200 ml of Fe solution. solution_{2}(THEREFORE)_{4})_{3} 0.3M. After the reactions are complete, the mass of the solution increases by 4.26 grams compared to the original solution. What is the value of a:

A. 3.25.

B. 8.45.

C. 4.53.

D. 6.5.

EASY ANSWER

WOMEN_{Fe2(SO4)3 }= 0.06 mol

→n_{Fe}3+ = 0.12 mol

Zn + 2Fe3+ → Zn2+ + 2Fe2+ (1)

Zn + Fe2+ → Zn2+ + Fe (2)

According to (1): n_{Zn} = 1/2nFe3+ = 0.06 mol

Set n_{Fe} birth = x mol => n_{Zn} (2) = x moles

I_{solution increase }= m_{Zn }– m_{Fe} = 4.26

=> 0.06.65 + 65x – 56x = 4.26 => x = 0.04

=> m_{Zn} = m_{Zn (1)} + m_{Zn (2)} = 65.(0.06 + 0.04) = 6.5 grams

……………………

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Soc Trang High School sends you the chemical equation FeO + H_{2}THEREFORE_{4} → Fe_{2}(THEREFORE)_{4})_{3 }+ SO_{2 }+ FRIENDS_{2}O compiled by Soc Trang High School is a redox reaction, the opposite reaction when iron (II) oxide is reacted with H acid solution._{2}THEREFORE_{4} When heated, the product obtained is iron (III) sulfate salt and has a strong odor SO ._{2}.

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## Tóp 10 FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O

## Video FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

## Hình Ảnh FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O

## Tin tức FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O

## Review FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O

## Tham khảo FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O

## Mới nhất FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O

## Hướng dẫn FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O

#FeO #H2SO4 #Fe2SO43 #SO2 #H2O