Review The Equation Below.$\[ 2 \, \text{KClO}_3 \rightarrow 2 \, \text{KCl} + 3 \, \text{O}_2 \\]How Many Moles Of Oxygen Are Produced When 2 Mol Of Potassium Chlorate \[$( \text{KClO}_3 )\$\] Decompose?A. 1 B. 2 C. 3 D. 6

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Balancing Chemical Equations and Mole Ratios: A Review of the Decomposition of Potassium Chlorate

Chemical equations are a fundamental concept in chemistry, allowing us to describe the interactions between different substances. One of the key aspects of chemical equations is balancing, which ensures that the number of atoms of each element is the same on both the reactant and product sides. In this article, we will review the equation for the decomposition of potassium chlorate (KClO3) and determine the number of moles of oxygen produced when 2 mol of KClO3 decompose.

The Balanced Equation

The given equation for the decomposition of potassium chlorate is:

2 KClO3→2 KCl+3 O2{ 2 \, \text{KClO}_3 \rightarrow 2 \, \text{KCl} + 3 \, \text{O}_2 }

This equation indicates that 2 moles of potassium chlorate decompose to produce 2 moles of potassium chloride and 3 moles of oxygen.

Understanding Mole Ratios

Mole ratios are a crucial concept in chemistry, allowing us to relate the amounts of reactants and products in a chemical reaction. In this case, the mole ratio between potassium chlorate and oxygen is 2:3, meaning that for every 2 moles of KClO3, 3 moles of O2 are produced.

Calculating the Number of Moles of Oxygen Produced

To determine the number of moles of oxygen produced when 2 mol of potassium chlorate decompose, we can use the mole ratio from the balanced equation. Since the mole ratio is 2:3, we can set up a proportion to relate the number of moles of KClO3 to the number of moles of O2:

2 mol KClO33 mol O2=2 mol KClO3x mol O2{ \frac{2 \, \text{mol KClO}_3}{3 \, \text{mol O}_2} = \frac{2 \, \text{mol KClO}_3}{x \, \text{mol O}_2} }

Solving for x, we get:

x=3 mol O22 mol KClO3×2 mol KClO3{ x = \frac{3 \, \text{mol O}_2}{2 \, \text{mol KClO}_3} \times 2 \, \text{mol KClO}_3 }

x=3 mol O2{ x = 3 \, \text{mol O}_2 }

Therefore, when 2 mol of potassium chlorate decompose, 3 mol of oxygen are produced.

In conclusion, the balanced equation for the decomposition of potassium chlorate is:

2 KClO3→2 KCl+3 O2{ 2 \, \text{KClO}_3 \rightarrow 2 \, \text{KCl} + 3 \, \text{O}_2 }

Using the mole ratio from the balanced equation, we can determine that when 2 mol of potassium chlorate decompose, 3 mol of oxygen are produced. This demonstrates the importance of balancing chemical equations and understanding mole ratios in chemistry.

  • The balanced equation for the decomposition of potassium chlorate is: 2 KClO3 → 2 KCl + 3 O2
  • The mole ratio between potassium chlorate and oxygen is 2:3
  • When 2 mol of potassium chlorate decompose, 3 mol of oxygen are produced
  • What is the balanced equation for the decomposition of potassium chlorate?
    • The balanced equation is: 2 KClO3 → 2 KCl + 3 O2
  • What is the mole ratio between potassium chlorate and oxygen?
    • The mole ratio is 2:3
  • How many moles of oxygen are produced when 2 mol of potassium chlorate decompose?
    • 3 mol of oxygen are produced
      Frequently Asked Questions: Balancing Chemical Equations and Mole Ratios

A: The purpose of balancing chemical equations is to ensure that the number of atoms of each element is the same on both the reactant and product sides. This is crucial in chemistry as it allows us to accurately predict the amounts of reactants and products in a chemical reaction.

A: To balance a chemical equation, you need to follow these steps:

  1. Write the unbalanced equation.
  2. Count the number of atoms of each element on both the reactant and product sides.
  3. Add coefficients (numbers in front of the formulas of reactants or products) to balance the equation.
  4. Check that the number of atoms of each element is the same on both sides.

A: A mole ratio is a ratio of the number of moles of two substances that are related by a chemical equation. It is a way to express the relationship between the amounts of reactants and products in a chemical reaction.

A: To determine the mole ratio between two substances, you need to follow these steps:

  1. Write the balanced equation for the reaction.
  2. Count the number of moles of each substance on both the reactant and product sides.
  3. Express the ratio of the number of moles of the two substances as a fraction or a ratio.

A: The mole ratio between potassium chlorate and oxygen in the decomposition reaction is 2:3. This means that for every 2 moles of potassium chlorate, 3 moles of oxygen are produced.

A: To determine the number of moles of oxygen produced when 2 mol of potassium chlorate decompose, you can use the mole ratio from the balanced equation. Since the mole ratio is 2:3, you can set up a proportion to relate the number of moles of KClO3 to the number of moles of O2:

2 mol KClO33 mol O2=2 mol KClO3x mol O2{ \frac{2 \, \text{mol KClO}_3}{3 \, \text{mol O}_2} = \frac{2 \, \text{mol KClO}_3}{x \, \text{mol O}_2} }

Solving for x, you get:

x=3 mol O22 mol KClO3×2 mol KClO3{ x = \frac{3 \, \text{mol O}_2}{2 \, \text{mol KClO}_3} \times 2 \, \text{mol KClO}_3 }

x=3 mol O2{ x = 3 \, \text{mol O}_2 }

Therefore, when 2 mol of potassium chlorate decompose, 3 mol of oxygen are produced.

A: The number of moles of reactants and products in a chemical reaction is related by the mole ratio. The mole ratio is a way to express the relationship between the amounts of reactants and products in a chemical reaction.

A: To use the mole ratio to determine the number of moles of a substance produced in a chemical reaction, you need to follow these steps:

  1. Write the balanced equation for the reaction.
  2. Count the number of moles of each substance on both the reactant and product sides.
  3. Express the ratio of the number of moles of the two substances as a fraction or a ratio.
  4. Use the mole ratio to set up a proportion to relate the number of moles of the reactant to the number of moles of the product.

In conclusion, balancing chemical equations and understanding mole ratios are crucial concepts in chemistry. By following the steps outlined in this article, you can determine the number of moles of a substance produced in a chemical reaction. Remember to always write the balanced equation, count the number of moles of each substance, and express the ratio of the number of moles of the two substances as a fraction or a ratio.