A hydrate of cobalt(II) chloride had a mass of 165.88 g before heating. After heating, the anhydrous CoCl, weighed 130.9 g. What is the mass of the water that was removed by heating? mass of the water = How many moles of water were removed by heating? moles of the water = mol How many moles of anhydrous CoCl, remain? moles of CoCl,= mol

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...
icon
Related questions
Question
**Question:**

A hydrate of cobalt(II) chloride had a mass of 165.88 g before heating. After heating, the anhydrous CoCl₂ weighed 130.9 g.

**What is the mass of the water that was removed by heating?**

mass of the water = ______  g

**How many moles of water were removed by heating?**

moles of the water = ______ mol

**How many moles of anhydrous CoCl₂ remain?**

moles of CoCl₂ = ______ mol
Transcribed Image Text:**Question:** A hydrate of cobalt(II) chloride had a mass of 165.88 g before heating. After heating, the anhydrous CoCl₂ weighed 130.9 g. **What is the mass of the water that was removed by heating?** mass of the water = ______ g **How many moles of water were removed by heating?** moles of the water = ______ mol **How many moles of anhydrous CoCl₂ remain?** moles of CoCl₂ = ______ mol
## Calculation of Moles for Hydration and Dehydration Reactions

### How many moles of water were removed by heating?
This section requires you to determine the moles of water lost during the heating process.

**Formula:**
\[ \text{moles of the water} = \, \text{_______ mol} \]

### How many moles of anhydrous CoCl₂ remain?
Here, you’ll calculate the remaining moles of anhydrous Cobalt(II) chloride.

**Formula:**
\[ \text{moles of CoCl₂} = \, \text{_______ mol} \]

### What is the hydration number (moles of water per mole of compound)?
Finally, establish the hydration number, indicating the number of moles of water per mole of the compound.

**Formula:**
\[ \text{hydration number} = \, \text{_______} \]

### Explanation of Diagrams:
There are no diagrams or graphs associated with the text.

### Use of the Formulas:
1. Input the calculated moles of water removed by heating into the first blank.
2. Input the calculated moles of anhydrous CoCl₂ remaining into the second blank.
3. Determine the hydration number by dividing the moles of water by the moles of anhydrous CoCl₂ and input the result into the third blank.

This setup will help students or practitioners perform essential chemistry calculations related to hydration and dehydration reactions.
Transcribed Image Text:## Calculation of Moles for Hydration and Dehydration Reactions ### How many moles of water were removed by heating? This section requires you to determine the moles of water lost during the heating process. **Formula:** \[ \text{moles of the water} = \, \text{_______ mol} \] ### How many moles of anhydrous CoCl₂ remain? Here, you’ll calculate the remaining moles of anhydrous Cobalt(II) chloride. **Formula:** \[ \text{moles of CoCl₂} = \, \text{_______ mol} \] ### What is the hydration number (moles of water per mole of compound)? Finally, establish the hydration number, indicating the number of moles of water per mole of the compound. **Formula:** \[ \text{hydration number} = \, \text{_______} \] ### Explanation of Diagrams: There are no diagrams or graphs associated with the text. ### Use of the Formulas: 1. Input the calculated moles of water removed by heating into the first blank. 2. Input the calculated moles of anhydrous CoCl₂ remaining into the second blank. 3. Determine the hydration number by dividing the moles of water by the moles of anhydrous CoCl₂ and input the result into the third blank. This setup will help students or practitioners perform essential chemistry calculations related to hydration and dehydration reactions.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Mole Concept
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY