When iron metal reacts with sulfuric acid, it produces iron (III) sulfate and hydrogen gas. Balance the equation: Fe + H2SO4 → F

Question

3 years ago

12

When iron metal reacts with sulfuric acid, it produces iron (III) sulfate and hydrogen gas. Balance the equation: Fe + H2SO4 → F

e2(SO4)3 + H2.
Explain why it is necessary to balance chemical equations and why coefficients can be added to an equation, but subscripts cannot be changed. (5 points)

Chemistry

2 answers:

Vitek1552 [10] · Answer 1 · 2022-06-18T06:16:08+03:00

The balanced chemical equation for the reaction as described in the question is;

2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2.

Coefficients can be added while balancing equations because the chemical characteristics of the reactants or products are retained, However, subscripts can not be changed because this in turn yields a different chemical substance.

To balance the equation;

Coefficients are added to reactants or products where necessary; the balanced equation of the reaction is as follows;

<em>2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2.</em>

It is necessary to balance chemical equations for stoichiometric purposes, this is so because, a balanced chemical equation provides a quantitative basis for which a chemical reaction occurs.

Additionally, coefficients can be added while balancing equations because the chemical characteristics of the reactants or products are retained, However, subscripts can not be changed because this in turn yields a different chemical substance.

Read more:

brainly.com/question/9697038

uranmaximum [27] · Answer 2 · 2022-06-18T04:45:51+03:00

Taking into account the law of conservation of matter, the balanced reaction is:

2 Fe + 3 H₂SO₄ → Fe₂(SO₄)₃ + 3 H₂

First, you must know that 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.

Then, you must balance the chemical equation. This is, balancing a chemical equation is to equalize the number and class of reactant atoms, ions or molecules with the products, in order to comply with the law of conservation of mass.

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.

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

This is because the subscripts that are placed on chemical symbols or formulas indicate the number of atoms that make up the substance. If the coefficients are modified, the quantities of the substance change, but if the subscripts are modified, different substances are originated.

In this case, the balanced reaction is:

2 Fe + 3 H₂SO₄ → Fe₂(SO₄)₃ + 3 H₂

Learn more: