Calculating the Number of Moles of Propane

Oct 13, 2025 by leolavanderia.com.br 54 views

68 Grams of Propane Reacts with Oxygen: A Comprehensive Analysis of the Balanced Chemical Equation

In this article, we will delve into the world of chemistry and explore the reaction between propane and oxygen. Propane, with the chemical formula C3H8, is a highly flammable gas that is commonly used as a fuel source. When propane reacts with oxygen, it undergoes a combustion reaction, resulting in the production of carbon dioxide and water. In this discussion, we will examine the balanced chemical equation for this reaction and calculate the number of moles of propane and oxygen involved.

The balanced chemical equation for the reaction between propane and oxygen is:

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)

In this equation, propane (C3H8) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The coefficients in the equation indicate the number of moles of each substance involved in the reaction.

Calculating the Number of Moles of Propane

To calculate the number of moles of propane, we need to know the mass of propane and its molar mass. The molar mass of propane is 44 g/mol, and the mass of propane is given as 68 grams.

Number of moles of propane = mass of propane / molar mass of propane = 68 g / 44 g/mol = 1.55 mol

Calculating the Number of Moles of Oxygen

To calculate the number of moles of oxygen, we need to know the mass of oxygen and its molar mass. The molar mass of oxygen is 32 g/mol, and the mass of oxygen is given as 96 grams.

Number of moles of oxygen = mass of oxygen / molar mass of oxygen = 96 g / 32 g/mol = 3 mol

Calculating the Limiting Reactant

To determine the limiting reactant, we need to compare the number of moles of propane and oxygen required to react completely. According to the balanced chemical equation, 1 mole of propane reacts with 5 moles of oxygen.

Number of moles of oxygen required = 5 × number of moles of propane = 5 × 1.55 mol = 7.75 mol

Since the number of moles of oxygen available (3 mol) is less than the number of moles of oxygen required (7.75 mol), oxygen is the limiting reactant.

Calculating the Number of Moles of Carbon Dioxide Produced

Since oxygen is the limiting reactant, we can calculate the number of moles of carbon dioxide produced using the number of moles of oxygen available.

Number of moles of carbon dioxide produced = number of moles of oxygen available / 5 = 3 mol / 5 = 0.6 mol

Calculating the Number of Moles of Water Produced

Since oxygen is the limiting reactant, we can calculate the number of moles of water produced using the number of moles of oxygen available.

Number of moles of water produced = number of moles of oxygen available / 5 = 3 mol / 5 = 0.6 mol

In this article, we have examined the balanced chemical equation for the reaction between propane and oxygen. We have calculated the number of moles of propane and oxygen involved in the reaction and determined that oxygen is the limiting reactant. We have also calculated the number of moles of carbon dioxide and water produced in the reaction. This analysis provides a comprehensive understanding of the reaction between propane and oxygen and can be applied to various real-world scenarios.

Chemistry: An Atoms First Approach, by Steven S. Zumdahl
General Chemistry: Principles and Modern Applications, by Linus Pauling

Molar mass: The mass of one mole of a substance, expressed in grams per mole (g/mol).
Limiting reactant: The reactant that is consumed first in a chemical reaction, determining the amount of product formed.
Balanced chemical equation: A chemical equation in which the number of atoms of each element is the same on both the reactant and product sides.
68 Grams of Propane Reacts with Oxygen: A Comprehensive Analysis of the Balanced Chemical Equation - Q&A

In our previous article, we delved into the world of chemistry and explored the reaction between propane and oxygen. We examined the balanced chemical equation for this reaction and calculated the number of moles of propane and oxygen involved. In this article, we will answer some frequently asked questions related to this topic.

Q: What is the balanced chemical equation for the reaction between propane and oxygen? A: The balanced chemical equation for the reaction between propane and oxygen is:

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)

Q: What is the molar mass of propane? A: The molar mass of propane is 44 g/mol.

Q: What is the mass of propane in the reaction? A: The mass of propane in the reaction is 68 grams.

Q: What is the mass of oxygen in the reaction? A: The mass of oxygen in the reaction is 96 grams.

Q: What is the molar mass of oxygen? A: The molar mass of oxygen is 32 g/mol.

Q: How many moles of propane are involved in the reaction? A: To calculate the number of moles of propane, we need to divide the mass of propane by its molar mass.

Number of moles of propane = mass of propane / molar mass of propane = 68 g / 44 g/mol = 1.55 mol

Q: How many moles of oxygen are involved in the reaction? A: To calculate the number of moles of oxygen, we need to divide the mass of oxygen by its molar mass.

Number of moles of oxygen = mass of oxygen / molar mass of oxygen = 96 g / 32 g/mol = 3 mol

Q: Which reactant is the limiting reactant in the reaction? A: Since the number of moles of oxygen available (3 mol) is less than the number of moles of oxygen required (7.75 mol), oxygen is the limiting reactant.

Q: How many moles of carbon dioxide are produced in the reaction? A: Since oxygen is the limiting reactant, we can calculate the number of moles of carbon dioxide produced using the number of moles of oxygen available.

Number of moles of carbon dioxide produced = number of moles of oxygen available / 5 = 3 mol / 5 = 0.6 mol

Q: How many moles of water are produced in the reaction? A: Since oxygen is the limiting reactant, we can calculate the number of moles of water produced using the number of moles of oxygen available.

Number of moles of water produced = number of moles of oxygen available / 5 = 3 mol / 5 = 0.6 mol

In this article, we have answered some frequently asked questions related to the reaction between propane and oxygen. We have provided the balanced chemical equation, calculated the number of moles of propane and oxygen involved, and determined the limiting reactant. We have also calculated the number of moles of carbon dioxide and water produced in the reaction. This Q&A article provides a comprehensive understanding of the reaction between propane and oxygen and can be applied to various real-world scenarios.

Chemistry: An Atoms First Approach, by Steven S. Zumdahl
General Chemistry: Principles and Modern Applications, by Linus Pauling

Molar mass: The mass of one mole of a substance, expressed in grams per mole (g/mol).
Limiting reactant: The reactant that is consumed first in a chemical reaction, determining the amount of product formed.
Balanced chemical equation: A chemical equation in which the number of atoms of each element is the same on both the reactant and product sides.