Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability
Section: Chapter Questions
Problem 41PS
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Balance the following equation
![**Balancing Chemical Equations**
**Balance the following chemical equation:**
\[ _{\text{Na}_2O} + _{\text{CaBr}_2} \rightarrow _{\text{NaBr}} + _{\text{CaO}} \]
### Options:
* \( \text{a.} \quad 1 : 1 : 2 : 1 \)
* \( \text{b.} \quad 2 : 1 : 1 : 1 \)
* \( \text{c.} \quad 1 : 2 : 1 : 1 \)
* \( \text{d.} \quad 1 : 1 : 1 : 2 \)
### Explanation:
Balancing chemical equations is an essential skill in chemistry. It ensures that the number of atoms for each element is the same on both sides of the equation, demonstrating the law of conservation of mass.
To balance this equation:
1. Identify the number of atoms for each element on both sides of the equation.
2. Adjust the coefficients \( (\_) \) to balance the atoms on both sides.
3. Check your work to ensure each element is balanced.
### Analysis:
Let’s check option \( \text{a} \) \( (1 : 1 : 2 : 1) \):
- **Sodium (Na):** Left: \( 2 \times 1 = 2 \) atoms, Right: \( 2 \times 1 = 2 \) atoms.
- **Calcium (Ca):** Left: \( 1 \times 1 = 1 \) atom, Right: \( 1 \times 1 = 1 \) atom.
- **Oxygen (O):** Left: \( 1 \times 1 = 1 \) atom, Right: \( 1 \times 1 = 1 \) atom.
- **Bromine (Br):** Left: \( 2 \times 1 = 2 \) atoms, Right: \( 1 \times 2 = 2 \) atoms.
Option \( \text{a} \) balances the equation correctly.
### Correct Answer:
\( \text{a.} \quad 1 : 1 : 2 : 1 \)
Understanding how to balance chemical equations is crucial for interpreting and predicting chemical reactions accurately.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd523066f-b053-453c-adec-7257125c89c0%2F56a9c947-aa36-4e9f-af6f-88a3e7638c70%2Fxv0o4nn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Balancing Chemical Equations**
**Balance the following chemical equation:**
\[ _{\text{Na}_2O} + _{\text{CaBr}_2} \rightarrow _{\text{NaBr}} + _{\text{CaO}} \]
### Options:
* \( \text{a.} \quad 1 : 1 : 2 : 1 \)
* \( \text{b.} \quad 2 : 1 : 1 : 1 \)
* \( \text{c.} \quad 1 : 2 : 1 : 1 \)
* \( \text{d.} \quad 1 : 1 : 1 : 2 \)
### Explanation:
Balancing chemical equations is an essential skill in chemistry. It ensures that the number of atoms for each element is the same on both sides of the equation, demonstrating the law of conservation of mass.
To balance this equation:
1. Identify the number of atoms for each element on both sides of the equation.
2. Adjust the coefficients \( (\_) \) to balance the atoms on both sides.
3. Check your work to ensure each element is balanced.
### Analysis:
Let’s check option \( \text{a} \) \( (1 : 1 : 2 : 1) \):
- **Sodium (Na):** Left: \( 2 \times 1 = 2 \) atoms, Right: \( 2 \times 1 = 2 \) atoms.
- **Calcium (Ca):** Left: \( 1 \times 1 = 1 \) atom, Right: \( 1 \times 1 = 1 \) atom.
- **Oxygen (O):** Left: \( 1 \times 1 = 1 \) atom, Right: \( 1 \times 1 = 1 \) atom.
- **Bromine (Br):** Left: \( 2 \times 1 = 2 \) atoms, Right: \( 1 \times 2 = 2 \) atoms.
Option \( \text{a} \) balances the equation correctly.
### Correct Answer:
\( \text{a.} \quad 1 : 1 : 2 : 1 \)
Understanding how to balance chemical equations is crucial for interpreting and predicting chemical reactions accurately.
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