Balance The Equation For This Reaction, And Answer The Questions. 1 N 2 + 3 H 2 → 2 N H 3 1 N_2 + 3 H_2 \rightarrow 2 NH_3 1 N 2 + 3 H 2 → 2 N H 3 A) If 25.0 G N 2 25.0 \, G \, N_2 25.0 G N 2 And 18.75 G H 2 18.75 \, G \, H_2 18.75 G H 2 Are Used For This Reaction, Which Reactant Will Be The Limiting Reactant?
Understanding the Reaction
The given chemical reaction is:
1 N2 + 3 H2 → 2 NH3
This reaction involves the combination of nitrogen gas (N2) and hydrogen gas (H2) to form ammonia (NH3). To balance the equation, we need to ensure that the number of atoms of each element is the same on both the reactant and product sides.
Balancing the Equation
To balance the equation, we need to add coefficients in front of the formulas of the reactants or products. The balanced equation is:
N2 + 3 H2 → 2 NH3
In this balanced equation, the number of nitrogen atoms is 2 on both sides, and the number of hydrogen atoms is 6 on both sides.
Calculating the Number of Moles
To determine the limiting reactant, we need to calculate the number of moles of each reactant. We can use the molar masses of N2 and H2 to calculate the number of moles.
The molar mass of N2 is 28.02 g/mol, and the molar mass of H2 is 2.02 g/mol.
Let's calculate the number of moles of N2 and H2:
Number of moles of N2 = mass of N2 / molar mass of N2 = 25.0 g / 28.02 g/mol = 0.892 mol
Number of moles of H2 = mass of H2 / molar mass of H2 = 18.75 g / 2.02 g/mol = 9.28 mol
Determining the Limiting Reactant
To determine the limiting reactant, we need to compare the mole ratio of the reactants to the coefficients in the balanced equation.
The balanced equation shows that 1 mole of N2 reacts with 3 moles of H2. We can calculate the mole ratio of N2 to H2 as follows:
Mole ratio of N2 to H2 = 1 mole of N2 / 3 moles of H2 = 0.333
We can also calculate the mole ratio of the actual number of moles of N2 to H2 as follows:
Mole ratio of N2 to H2 = 0.892 mol of N2 / 9.28 mol of H2 = 0.096
Since the mole ratio of the actual number of moles of N2 to H2 (0.096) is less than the mole ratio in the balanced equation (0.333), H2 is the limiting reactant.
Conclusion
In conclusion, the balanced equation for the reaction is:
N2 + 3 H2 → 2 NH3
We calculated the number of moles of N2 and H2 and determined that H2 is the limiting reactant.
Frequently Asked Questions
Q: What is the limiting reactant in the reaction?
A: The limiting reactant is the reactant that is consumed first in the reaction.
Q: How do you determine the limiting reactant?
A: To determine the limiting reactant, you need to compare the mole ratio of the reactants to the coefficients in the balanced equation.
Q: What is the balanced equation for the reaction?
A: The balanced equation for the reaction is:
N2 + 3 H2 → 2 NH3
Q: How do you calculate the number of moles of each reactant?
A: To calculate the number of moles of each reactant, you need to divide the mass of each reactant by its molar mass.
Q: What is the molar mass of N2 and H2?
Q: What is the purpose of balancing a chemical equation?
A: The purpose of balancing a chemical equation is to ensure that the number of atoms of each element is the same on both the reactant and product sides. This is important because it allows us to predict the products of a reaction and the amount of each product that will be formed.
Q: How do you balance a chemical equation?
A: To balance a chemical equation, you need to add coefficients in front of the formulas of the reactants or products. The coefficients are numbers that are multiplied by the formulas of the reactants or products to balance the equation.
Q: What is the difference between a balanced equation and an unbalanced equation?
A: A balanced equation is an equation in which the number of atoms of each element is the same on both the reactant and product sides. An unbalanced equation is an equation in which the number of atoms of each element is not the same on both the reactant and product sides.
Q: How do you determine the limiting reactant in a reaction?
A: To determine the limiting reactant in a reaction, you need to compare the mole ratio of the reactants to the coefficients in the balanced equation. The reactant that is consumed first in the reaction is the limiting reactant.
Q: What is the mole ratio of the reactants in a reaction?
A: The mole ratio of the reactants in a reaction is the ratio of the number of moles of each reactant to the number of moles of the other reactant.
Q: How do you calculate the mole ratio of the reactants in a reaction?
A: To calculate the mole ratio of the reactants in a reaction, you need to divide the number of moles of each reactant by the number of moles of the other reactant.
Q: What is the difference between a limiting reactant and an excess reactant?
A: A limiting reactant is the reactant that is consumed first in a reaction, while an excess reactant is the reactant that is present in excess of the amount required to react with the limiting reactant.
Q: How do you determine the amount of each product that will be formed in a reaction?
A: To determine the amount of each product that will be formed in a reaction, you need to use the mole ratio of the reactants and the coefficients in the balanced equation.
Q: What is the importance of balancing a chemical equation?
A: Balancing a chemical equation is important because it allows us to predict the products of a reaction and the amount of each product that will be formed. It also helps us to understand the stoichiometry of a reaction, which is the relationship between the amounts of reactants and products.
Q: How do you balance a chemical equation with multiple reactants and products?
A: To balance a chemical equation with multiple reactants and products, you need to add coefficients in front of the formulas of the reactants and products. You also need to make sure that the number of atoms of each element is the same on both the reactant and product sides.
Q: What is the difference between a chemical equation and a chemical reaction?
A: A chemical equation is a representation of a chemical reaction, while a chemical reaction is the actual process of chemical change.
Q: How do you write a balanced chemical equation?
A: To write a balanced chemical equation, you need to follow these steps:
- Write the unbalanced equation.
- Count the number of atoms of each element on both the reactant and product sides.
- Add coefficients in front of the formulas of the reactants and products to balance the equation.
- Check that the number of atoms of each element is the same on both the reactant and product sides.
Q: What is the importance of balancing a chemical equation in chemistry?
A: Balancing a chemical equation is important in chemistry because it allows us to predict the products of a reaction and the amount of each product that will be formed. It also helps us to understand the stoichiometry of a reaction, which is the relationship between the amounts of reactants and products.