Balance the reaction Si3 N4 (s) → Si(s) +N2 (g). Express your answer as a chemical equation. Identify all of the phases in your answer.

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Balancing Chemical Equations: Example Problem**

**Part A**

**Objective:** Balance the reaction and express your answer as a chemical equation. Identify all of the phases in your answer.

**Unbalanced Reaction:**

\[ \text{Si}_3\text{N}_4 (s) \rightarrow \text{Si} (s) + \text{N}_2 (g) \]

**Instructions:**

1. **Examine the Unbalanced Equation:** The given reaction involves the decomposition of silicon nitride (\(\text{Si}_3\text{N}_4\)) into silicon (\(\text{Si}\)) and nitrogen gas (\(\text{N}_2\)).

2. **Identify Phases:** 
   - \(\text{Si}_3\text{N}_4\) is in the solid phase (s).
   - \(\text{Si}\) is in the solid phase (s).
   - \(\text{N}_2\) is in the gaseous phase (g).

3. **Steps for Balancing:**
   - Count the number of silicon and nitrogen atoms on both sides of the equation.
   - Balance the equation by modifying coefficients to equalize the quantity of each element on both sides.

**Tools Available:** 
- Editor options for entering chemical formulas.
- Buttons for formatting and resetting the input.

**Actions:**
- Enter your balanced equation in the provided input field.
- Click 'Submit' to save your answer.
- If unsure, use the 'Request Answer' feature.

**Note:**
- Indicate if no chemical reaction occurs (not applicable in this case).

**Part B**

- Proceed with completing previous part(s) as instructed.

This structured approach assists students in understanding the importance of balancing chemical equations, involving careful examination of the reactants and products, as well as properly identifying the phases of substances involved.
Transcribed Image Text:**Balancing Chemical Equations: Example Problem** **Part A** **Objective:** Balance the reaction and express your answer as a chemical equation. Identify all of the phases in your answer. **Unbalanced Reaction:** \[ \text{Si}_3\text{N}_4 (s) \rightarrow \text{Si} (s) + \text{N}_2 (g) \] **Instructions:** 1. **Examine the Unbalanced Equation:** The given reaction involves the decomposition of silicon nitride (\(\text{Si}_3\text{N}_4\)) into silicon (\(\text{Si}\)) and nitrogen gas (\(\text{N}_2\)). 2. **Identify Phases:** - \(\text{Si}_3\text{N}_4\) is in the solid phase (s). - \(\text{Si}\) is in the solid phase (s). - \(\text{N}_2\) is in the gaseous phase (g). 3. **Steps for Balancing:** - Count the number of silicon and nitrogen atoms on both sides of the equation. - Balance the equation by modifying coefficients to equalize the quantity of each element on both sides. **Tools Available:** - Editor options for entering chemical formulas. - Buttons for formatting and resetting the input. **Actions:** - Enter your balanced equation in the provided input field. - Click 'Submit' to save your answer. - If unsure, use the 'Request Answer' feature. **Note:** - Indicate if no chemical reaction occurs (not applicable in this case). **Part B** - Proceed with completing previous part(s) as instructed. This structured approach assists students in understanding the importance of balancing chemical equations, involving careful examination of the reactants and products, as well as properly identifying the phases of substances involved.
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