Nitrogen gas can be prepared by passing ammonia over copper(II) oxide, and the other products are copper metal and water vapor. If a sample containing 8.63 moles of NH3 is reacted with excess copper(I) oxide, how many grams of N2 will be formed?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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**Question:**

Nitrogen gas can be prepared by passing ammonia over copper(II) oxide, and the other products are copper metal and water vapor. If a sample containing 8.63 moles of \( \text{NH}_3 \) is reacted with excess copper(II) oxide, how many grams of \( \text{N}_2 \) will be formed?

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**Explanation:**

The problem involves a chemical reaction where ammonia (\( \text{NH}_3 \)) reacts with copper(II) oxide to produce nitrogen gas (\( \text{N}_2 \)), copper metal, and water vapor. The task is to determine the amount of nitrogen gas produced in grams when a specific amount of ammonia is used.

1. **Balanced Chemical Equation:**

   The balanced chemical equation for the reaction is necessary to determine the stoichiometric ratios between reactants and products.

2. **Mole Ratio:**

   Use the balanced equation to identify the mole ratio between ammonia and nitrogen gas.

3. **Calculation:**

   - Calculate the moles of \( \text{N}_2 \) produced using the mole ratio.
   - Convert moles of \( \text{N}_2 \) to grams using the molar mass of nitrogen gas.

4. **Result:**

   Present the final result in grams.
Transcribed Image Text:**Question:** Nitrogen gas can be prepared by passing ammonia over copper(II) oxide, and the other products are copper metal and water vapor. If a sample containing 8.63 moles of \( \text{NH}_3 \) is reacted with excess copper(II) oxide, how many grams of \( \text{N}_2 \) will be formed? --- **Explanation:** The problem involves a chemical reaction where ammonia (\( \text{NH}_3 \)) reacts with copper(II) oxide to produce nitrogen gas (\( \text{N}_2 \)), copper metal, and water vapor. The task is to determine the amount of nitrogen gas produced in grams when a specific amount of ammonia is used. 1. **Balanced Chemical Equation:** The balanced chemical equation for the reaction is necessary to determine the stoichiometric ratios between reactants and products. 2. **Mole Ratio:** Use the balanced equation to identify the mole ratio between ammonia and nitrogen gas. 3. **Calculation:** - Calculate the moles of \( \text{N}_2 \) produced using the mole ratio. - Convert moles of \( \text{N}_2 \) to grams using the molar mass of nitrogen gas. 4. **Result:** Present the final result in grams.
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