4-tert-butylcyclohexanol 1,32 156.27 8.45.10 Which is the limiting reagent? Calculate the % yield of 4-tert-butylcyclohexanol (show working and note significant figures).
4-tert-butylcyclohexanol 1,32 156.27 8.45.10 Which is the limiting reagent? Calculate the % yield of 4-tert-butylcyclohexanol (show working and note significant figures).
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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Transcribed Image Text:**Table of Reagents:**
Complete the following table of reagents (you may need to look up some information: I recommend the Sigma-Aldrich catalog/website as a useful source). Use the appropriate number of significant figures.
| Compound | Mass (g) | Molar mass (g/mol) | Moles |
|-----------------------------------|----------|---------------------|-------------|
| 4-tert-butylcyclohexanone | 0.60 | 156.425 | 3.84 x 10^-3 |
| Sodium borohydride | 0.10 | 37.83 | 2.64 x 10^-3 |
| 4-tert-butylcyclohexanol | 1.32 | 156.27 | 8.45 x 10^-3 |
**Questions:**
1. **Which is the limiting reagent?**
2. **Calculate the % yield of 4-tert-butylcyclohexanol (show working and note significant figures).**
---
**Explanation of the Table:**
The table contains information about three compounds involved in a chemical reaction. Each compound's mass in grams and their respective molar masses in g/mol are provided. Based on these values, the number of moles involved in the reaction is calculated.
- **4-tert-butylcyclohexanone** is used in a quantity of 0.60 grams with a molar mass of 156.425 g/mol, resulting in 3.84 x 10^-3 moles.
- **Sodium borohydride** is present as 0.10 grams with a molar mass of 37.83 g/mol, giving 2.64 x 10^-3 moles.
- The final product, **4-tert-butylcyclohexanol**, has a mass of 1.32 grams and a molar mass of 156.27 g/mol, equating to 8.45 x 10^-3 moles.
The questions prompt calculation of the limiting reagent, which is the reactant that will be completely consumed first, limiting the amount of product formed. Additionally, the percentage yield of 4-tert-butylcyclohexanol, based on theoretical and actual yield comparison, needs to be determined.
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