For the reaction NH3 + NO → N2 + H2O, identify the reactants, products, and their coefficients once the equation is balanced.

For the reaction NH3 + NO → N2 + H2O, identify the reactants, products, and their coefficients once the equation is balanced. (3 points) Group of answer choices Reactants: 2NH3 and 2NO; products: 2N2 and 3H2O Products: 2NH3 and 3NO; reactants: 2N2 and 3H2O Reactants: 4NH3 and 6NO; products: 5N2 and 6H2O Products: 4NH3 and 2NO; reactants: 3N2 and 6H2O

The Correct Answer and Explanation is:

The given chemical reaction is:

NH3+NO→N2+H2O\text{NH}_3 + \text{NO} \rightarrow \text{N}_2 + \text{H}_2\text{O}NH3​+NO→N2​+H2​O

We need to balance the equation and identify the reactants, products, and their coefficients.

Step 1: Write the unbalanced equation

The unbalanced equation is:
NH3+NO→N2+H2O\text{NH}_3 + \text{NO} \rightarrow \text{N}_2 + \text{H}_2\text{O}NH3​+NO→N2​+H2​O

Step 2: Balance nitrogen atoms

• On the left side, there is 1 nitrogen atom in NH₃ and 1 nitrogen atom in NO, so there are a total of 2 nitrogen atoms on the left.
• On the right side, N₂ has 2 nitrogen atoms. So, we balance the nitrogen atoms by placing a coefficient of 1 in front of N₂: NH3+NO→1N2+H2O\text{NH}_3 + \text{NO} \rightarrow 1\text{N}_2 + \text{H}_2\text{O}NH3​+NO→1N2​+H2​O

Step 3: Balance hydrogen atoms

• On the left, NH₃ has 3 hydrogen atoms, so we have a total of 3 hydrogen atoms from NH₃.
• On the right, H₂O has 2 hydrogen atoms. To balance the hydrogen atoms, place a coefficient of 3/2 in front of H₂O: NH3+NO→1N2+32H2O\text{NH}_3 + \text{NO} \rightarrow 1\text{N}_2 + \frac{3}{2}\text{H}_2\text{O}NH3​+NO→1N2​+23​H2​O

Step 4: Balance oxygen atoms

• On the left, NO has 1 oxygen atom, so we need 1 oxygen atom on the right side.
• On the right side, H₂O has 1 oxygen atom, so we already have 1 oxygen atom in H₂O.

Thus, oxygen is balanced, but we need to eliminate the fraction in front of H₂O.

Step 5: Eliminate fractions by multiplying through by 2

Multiply all the coefficients by 2 to eliminate the fraction:

2NH3+2NO→2N2+3H2O2\text{NH}_3 + 2\text{NO} \rightarrow 2\text{N}_2 + 3\text{H}_2\text{O}2NH3​+2NO→2N2​+3H2​O

Final Balanced Equation:

The balanced equation is:
2NH3+2NO→2N2+3H2O2\text{NH}_3 + 2\text{NO} \rightarrow 2\text{N}_2 + 3\text{H}_2\text{O}2NH3​+2NO→2N2​+3H2​O

Step 6: Identify Reactants and Products

• Reactants: 2NH₃ and 2NO
• Products: 2N₂ and 3H₂O

Correct Answer:

Reactants: 2NH₃ and 2NO; products: 2N₂ and 3H₂O

This is the correct balanced equation, and the stoichiometric coefficients are properly adjusted to ensure conservation of mass for each element.