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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Question

Transcribed Image Text:### Part C
Given:
- Molar Mass: 181.44 g/mol
- Empirical Formula: C₂HCl
**Task**: Express your answer as a chemical formula.
The solution uses a chemical formula editor, indicating the following formula:
- C₆H₃Cl₂
### Explanation
The task involves using a given empirical formula and molar mass to deduce the molecular formula. The empirical formula suggests a base composition of the elements, which is adjusted according to the molar mass to produce the molecular formula. Here, C₂HCl is expanded to C₆H₃Cl₂ based on the provided molar mass of 181.44 g/mol. The editing toolbar above the answer box allows for precise formatting of chemical formulas using various mathematical and chemical symbols.

Transcribed Image Text:**Title: Determining Molecular Formulas from Molar Mass and Empirical Formulas**
**Overview**
The task involves finding the molecular formulas of several compounds that contain carbon and chlorine, provided with their molar masses and empirical formulas.
**Instructions**
1. **Analyze the Given Data:**
- For each compound, determine its molecular formula using the provided molar mass and empirical formula.
2. **Molecular Formula Calculation:**
- Use the relationship between the empirical formula and the molar mass to find the molecular formula.
**Part A**
- **Data Provided:**
- Molar Mass: 284.77 g/mol
- Empirical Formula: CCl
- **Task:**
- Express the molecular formula based on the data.
- **Example Attempt:**
- Attempted Formula: \( \text{C}_6\text{Cl}_6 \)
- **Outcome:**
- Result: **Incorrect**
- Note: The system indicates the answer is incorrect and prompts with "Try Again", with 5 attempts remaining.
**Part B**
- **Data Provided:**
- Molar Mass: 131.39 g/mol
- Empirical Formula: \( \text{C}_2\text{HCl}_3 \)
- **Task:**
- Express the molecular formula based on the data.
**Summary**
To find the correct molecular formula, compare the molar mass of the empirical formula unit with the given molar mass of the compound. Calculate the number of empirical units that fit into the given molar mass, and adjust the formula accordingly. Submit your response and check the feedback or error message to refine your answer further.
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