Question

REAL-WORLD Classify Reactions in Real-World Scenarios

CONNECTION
Silver tarnishes as silver metal reacts with
hydrogen sulfide, H₂S, in the air. In this reaction,
dark silver sulfide, Au₂S, covers the surface of
silver.
When silver is polished, this coating of silver
sulfide can be removed from the surface. This
makes the silver shiny again.
Photo by Mgeurts
Enter the coefficients that balance the tarnishing
reaction equation. (Type 1 for no coefficient.)
Ag(s) + H₂S(g) → Ag₂S(s) +
H₂(g)
DONE

Answer 1

The coefficients that will balance the tarnishing reaction equation are: 2, 1, 1,1

What is a chemical equation

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

Thus, we can obtain the coefficients that will balance the tarnishing reaction equation by simply balancing the equation:

How to balance the equation

Ag(s) + H₂S(g) → Ag₂S(s) + H₂(g)

There are 2 atoms of Ag on the right side and 1 atom on the left side. It can be balanced by writing 2 before Ag as shown below:

2Ag(s) + H₂S(g) → Ag₂S(s) + H₂(g)

Thus, the equation is balanced.

The coefficients are: 2, 1, 1, 1 :)