18. When heated, gaseous ammonia will react with oxygen gas to produce nitrogen monoxide gas and water vapor. What volume of nitrogen monoxide will be produced at 74.5 psi and 125 °C when 47.5 L of oxygen gas at STP are used in the reaction?

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### Chemical Reaction of Ammonia and Oxygen Gas

**Problem Statement:**

18. When heated, gaseous ammonia will react with oxygen gas to produce nitrogen monoxide gas and water vapor. What volume of nitrogen monoxide will be produced at 74.5 psi and 125°C when 47.5 L of oxygen gas at STP are used in the reaction? 

**Explanation:**

This problem involves a chemical reaction between ammonia (NH₃) and oxygen (O₂). The balanced chemical equation for the reaction is as follows:
\[ 4 \text{NH}_3(g) + 5 \text{O}_2(g) \rightarrow 4 \text{NO}(g) + 6 \text{H}_2\text{O}(g) \]

You'll need to use the Ideal Gas Law and stoichiometry to determine the volume of nitrogen monoxide (NO) produced. The initial volume of oxygen gas is given at Standard Temperature and Pressure (STP: 0°C and 1 atm, or 273.15 K and 101.3 kPa). We are asked to find the volume of NO produced at specific conditions (74.5 psi and 125°C).

**Steps:**

1. Convert all given values to consistent units for the calculation.
2. Use stoichiometric relationships to find the moles of oxygen gas and nitrogen monoxide.
3. Apply the Ideal Gas Law to find the volume of nitrogen monoxide under the specified conditions.

An in-depth explanation and detailed steps for solving this can be shown on our website to guide students through similar chemistry problems involving gas laws and stoichiometry.
Transcribed Image Text:### Chemical Reaction of Ammonia and Oxygen Gas **Problem Statement:** 18. When heated, gaseous ammonia will react with oxygen gas to produce nitrogen monoxide gas and water vapor. What volume of nitrogen monoxide will be produced at 74.5 psi and 125°C when 47.5 L of oxygen gas at STP are used in the reaction? **Explanation:** This problem involves a chemical reaction between ammonia (NH₃) and oxygen (O₂). The balanced chemical equation for the reaction is as follows: \[ 4 \text{NH}_3(g) + 5 \text{O}_2(g) \rightarrow 4 \text{NO}(g) + 6 \text{H}_2\text{O}(g) \] You'll need to use the Ideal Gas Law and stoichiometry to determine the volume of nitrogen monoxide (NO) produced. The initial volume of oxygen gas is given at Standard Temperature and Pressure (STP: 0°C and 1 atm, or 273.15 K and 101.3 kPa). We are asked to find the volume of NO produced at specific conditions (74.5 psi and 125°C). **Steps:** 1. Convert all given values to consistent units for the calculation. 2. Use stoichiometric relationships to find the moles of oxygen gas and nitrogen monoxide. 3. Apply the Ideal Gas Law to find the volume of nitrogen monoxide under the specified conditions. An in-depth explanation and detailed steps for solving this can be shown on our website to guide students through similar chemistry problems involving gas laws and stoichiometry.
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