Question

Write a balanced equation for the formation from its elements of sodium peroxide, an industrial bleach.

Short answer

2 Na + O2 -> Na2O2

Step-by-step solution

- Identify the Elements

First, identify the elements involved in the formation of sodium peroxide. Sodium peroxide (Na2O2) is made from sodium (Na) and oxygen (O2).

- Write the Unbalanced Equation

Write the unbalanced chemical equation using the identified elements:Na + O2 -> Na2O2

- Balance Sodium Atoms

There are 2 sodium atoms in Na2O2 and 1 sodium atom on the reactants' side. To balance the sodium atoms, place a coefficient of 2 in front of Na:2 Na + O2 -> Na2O2

- Confirm Balanced Equation

Verify all elements are balanced. There are 2 Na atoms and 2 O atoms on both sides of the equation, indicating it is balanced.

Key concepts

chemical reactions

In chemical reactions, substances known as reactants are transformed into new substances called products. This transformation involves breaking and forming chemical bonds.

For example, let's consider our exercise: forming sodium peroxide (Na2O2). The reactants are sodium (Na) and oxygen (O2), and the product is sodium peroxide (Na2O2). When sodium reacts with oxygen, their atoms rearrange to form the sodium peroxide compounds.

Here is the unbalanced chemical equation: Na + O2 -> Na2O2.

During this reaction, each sodium atom must pair with oxygen atoms in the correct proportions. This way, we can form a stable product. Such reactions are foundational to industrial chemistry, where creating specific compounds consistently and safely is essential.

stoichiometry

Stoichiometry is the quantitative study of reactants and products in a chemical reaction. It helps determine the proportions of elements in a reaction to ensure the equation is balanced.

To understand stoichiometry, consider this balanced equation for forming sodium peroxide: 2 Na + O2 -> Na2O2.

This equation tells us that two sodium atoms react with one oxygen molecule to form one molecule of sodium peroxide. The coefficients (the numbers before the chemical symbols) show the ratio of molecules or atoms involved in the reaction. It ensures mass conservation according to the Law of Conservation of Mass.

Without proper stoichiometry, we could end up with unreacted leftovers or incomplete reactions, which is not efficient for any industrial process. Being precise with the amount of each reactant used ensures that the desired product is created without waste.

industrial chemistry

Industrial chemistry focuses on manufacturing chemical products on a large scale. It's essential for producing materials like paints, pharmaceuticals, and bleaches like sodium peroxide.

In our example, sodium peroxide (Na2O2) is produced by carefully measuring reactants and applying the balanced chemical equation: 2 Na + O2 -> Na2O2.

For industrial purposes, controlling the reaction conditions such as temperature and pressure is vital to maximize yield and purity of the product.

Sodium peroxide is an effective bleach because it releases oxygen upon contact with water, breaking down stains through oxidation. Industrial chemists need to understand these chemical principles to ensure the bleach is effective and safe for use.

Thus, a deep understanding of chemical reactions and stoichiometry is crucial in industrial chemistry to create high-quality, reliable products on a large scale.