The equations are not balanced. Which equation would have the same coefficients in the same order as 2CO2 + 3H20 C2H6O + 3O2? FeCl3 + NH4OH Fe(OH)3 + NH4Cl CH4 + O2 CO2 + H2O Fe + H2SO4 Fe2(SO4)3 + H2 PCl5 + H2O HCl + H3PO4

Taking into accoun the law of conservation of matter, the reaction 2 Fe + 3 H₂SO₄ → Fe₂(SO4)₃ + 3 H₂ has the same coefficients in the same order as 2 CO₂ + 3 H₂O → C₂H₆O + 3 O₂

In first place, you have the balanced equation:

2 CO₂ + 3 H₂O → C₂H₆O + 3 O₂

The coefficients of the balanced reaction in order are: 2 -3- 1- 3

Law of conservation of matter

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Balance a chemical equation

Considering the law of conservation of matter, you must balance the chemical equation.

For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts

On the other side the coefficients located in front of each molecule indicate the amount of each compound for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

This case

Considering what was expressed above and the reactions given, the following balanced reactions are obtained:

FeCl₃ + 3 NH₄OH → Fe(OH)₃ + 3 NH₄ClCH₄ + 2 O₂ → CO₂ + 2 H₂O2 Fe + 3 H₂SO₄ → Fe₂(SO4)₃ + 3 H₂ PCl₅ + 4 H₂O → 5 HCl + H₃PO₄

The coefficients of each balanced reaction in order are:

1 -3- 1- 31 -2- 1- 22 -3- 1- 31 -4 -5 -1

Finally, the reaction 2 Fe + 3 H₂SO₄ → Fe₂(SO4)₃ + 3 H₂ has the same coefficients in the same order as 2 CO₂ + 3 H₂O → C₂H₆O + 3 O₂

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Unbalanced= Fe + H2SO4 Fe2(SO4)3 + H2

Balanced with same coefficients in the same order= 2Fe + 3H2SO4 ---> Fe2(SO4)3 + 3H2

Explanation:

Balancing a chemical equation means having the same number of atoms of an element on the reactant side as on the product side in accordance to the law of conservation of mass. To do this, coefficients (number behind the element) are used.

In this question,the below balanced equation was given

2CO2 + 3H20 ---> C2H6O + 3O2

Four other unbalanced equations were also given to be balanced and see which will have the same coefficients in the same order as the template equation. Let's start balancing each equation.

1. FeCl3 + NH4OH ---> Fe(OH)3 + NH4Cl (unbalanced)

Atoms of nitrogen, hydrogen, oxygen and Chlorine are unequal in both sides. Hence, we have

FeCl3 + 3NH4OH ---> Fe(OH)3 + 3NH4Cl (balanced)

2. CH4 + O2 ---> CO2 + H2O (unbalanced)

Atoms of hydrogen and oxygen are unequal in both sides. We have;

CH4 + 2O2 ---> CO2 + 2H2O (balanced)

3. Fe + H2SO4 ---> Fe2(SO4)3 + H2 (unbalanced)

Atoms of iron, sulphur, and oxygen are unequal in both sides. Hence,

2Fe + 3H2SO4 ---> Fe2(SO4)3 + 3H2 (balanced)

4. PCl5 + H2O ---> HCl + H3PO4 (unbalanced)

Atoms of chlorine, hydrogen, and oxygen are unequal in both sides. Hence,

PCl5 + 4H2O ---> 5HCl + H3PO4 (balanced).

From the above balanced equations, it can be observed that; 2Fe + 3H2SO4 ---> Fe2(SO4)3 + 3H2 has the same coefficients in the same order as 2CO2 + 3H20 ---> C2H6O + 3O2

That is, coefficient 2 3 1 3.

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