Problem 28 - Chemistry Matter and Change

Question

Give the formula for each compound. diphosphorus trioxide

Step-by-Step Solution

Answer

The formula for diphosphorus trioxide is \( P_2O_3 \).

Step 1: Understanding the Prefixes

In chemical nomenclature, the prefixes 'di-' and 'tri-' are used to indicate the number of each type of atom in a compound. 'Di-' means two, and 'tri-' means three.

Step 2: Identifying the Elements

The compound name 'diphosphorus trioxide' consists of two elements: phosphorus and oxygen. The prefix 'di-' applies to phosphorus and the prefix 'tri-' applies to oxygen.

Step 3: Combining the Elements in the Formula

Since 'di-' indicates two phosphorus atoms and 'tri-' indicates three oxygen atoms, the formula for 'diphosphorus trioxide' is written by combining these atoms. The chemical symbol for phosphorus is P and for oxygen is O.

Step 4: Writing the Chemical Formula

Using the information from previous steps, combine the elements: with two phosphorus atoms and three oxygen atoms. Therefore, the chemical formula becomes \( P_2O_3 \).

Key Concepts

Chemical Nomenclature

Chemical nomenclature is like the language of chemistry. It helps scientists and students name chemical compounds consistently. This system uses standardized prefixes and suffixes to describe the elements and the number of atoms in a compound.
One of the most common prefixes used is 'mono-', meaning one atom, though it's often omitted with the first element. 'Di-' indicates two atoms, 'tri-' means three, 'tetra-' stands for four, and so on. For instance, in the name ‘diphosphorus trioxide,’ the ‘di-’ tells us there are two atoms of phosphorus, and ‘tri-’ indicates three atoms of oxygen.
Using this naming system makes it easier to understand the composition of a compound just by looking at its name. It is essential not only for academic purposes but also for real-world applications where accurate chemical representation is crucial.

• 'Mono-' = 1
• 'Di-' = 2
• 'Tri-' = 3
• 'Tetra-' = 4

Phosphorus Compounds

Phosphorus is a fascinating element found in many compounds that are crucial in both the natural world and human applications. Its chemical symbol is P, and it can commonly be found in several allotropic forms.
In compounds, phosphorus can form different types of oxides. One common oxide is diphosphorus trioxide. This compound appears as a white, crystalline solid and is considered an important reagent in the synthesis of various phosphorus-based chemicals.
Phosphorus has several oxidation states, meaning it can form diverse compounds. In diphosphorus trioxide, phosphorus shows a +3 oxidation state. Understanding the behavior of phosphorus in these compounds is essential because they play critical roles, especially in agriculture where phosphorus compounds are used as fertilizers.

• Symbol: P
• Common oxidation state in diphosphorus trioxide: +3
• Role in agriculture: Fertilizers

Oxygen Compounds

Oxygen is another versatile element with the ability to form compounds with nearly every element in the periodic table, thanks to its high electronegativity.
In the context of diphosphorus trioxide, oxygen combines with phosphorus to produce the compound \( P_2O_3 \). Within the molecule, each oxygen atom forms a bond with phosphorus, and these bonds influence the compound’s chemical and physical properties.
Understanding oxygen compounds is crucial in environmental science because, for example, oxides released into the atmosphere can contribute to air pollution. They also have roles in industries such as manufacturing, where oxygen compounds are used to make products like glass or plastics.

• Symbol: O
• Versatile and reactive
• Key in environmental science and industry