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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![The following thermochemical equation is for the reaction of water (l) to form hydrogen (g) and oxygen (g).
\[ \text{2H}_2\text{O(l)} \rightarrow \text{2H}_2\text{(g)} + \text{O}_2\text{(g)} \quad \Delta H = 572 \, \text{kJ} \]
How many grams of H\(_2\)O(l) would be made to react if 108 kJ of energy were provided?
\[ \_\_\_\_\_ \, \text{grams} \]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3dae5a27-a228-455d-8cc9-f5b577430088%2Fca45f402-8500-4fa1-9a8f-d571a555c3ac%2Fdveg8e_processed.png&w=3840&q=75)
Transcribed Image Text:The following thermochemical equation is for the reaction of water (l) to form hydrogen (g) and oxygen (g).
\[ \text{2H}_2\text{O(l)} \rightarrow \text{2H}_2\text{(g)} + \text{O}_2\text{(g)} \quad \Delta H = 572 \, \text{kJ} \]
How many grams of H\(_2\)O(l) would be made to react if 108 kJ of energy were provided?
\[ \_\_\_\_\_ \, \text{grams} \]
![**Thermochemical Reaction of Hydrogen Sulfide with Water**
The following thermochemical equation represents the reaction of hydrogen sulfide (H₂S) in the gaseous state with liquid water (H₂O) to form hydrogen gas (H₂) and sulfur dioxide gas (SO₂).
**Reaction:**
\[ \textbf{H}_2\textbf{S(g)} + 2 \textbf{H}_2\textbf{O(g)} \rightarrow 3 \textbf{H}_2\textbf{(g)} + \textbf{SO}_2\textbf{(g)} \hspace{10px} \Delta H = 207 \, \text{kJ} \]
**Details:**
- **ΔH (Enthalpy Change):** The enthalpy change for this reaction is 207 kJ. This value indicates the amount of energy absorbed during the reaction process.
**Problem Statement:**
Determine the amount of energy (in kJ) released or absorbed when 11.6 grams of hydrogen sulfide react with excess water.
**Hint:**
An amount of energy is expressed as a positive number. The sign of ΔH in the thermochemical equation indicates whether energy is absorbed or evolved. In this context, a positive ΔH suggests that energy is absorbed during the reaction.
Fill in the blank: When 11.6 grams of hydrogen sulfide react with excess water, [ ] kJ of energy are [absorbed/evolved].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3dae5a27-a228-455d-8cc9-f5b577430088%2Fca45f402-8500-4fa1-9a8f-d571a555c3ac%2Fqiflr1b_processed.png&w=3840&q=75)
Transcribed Image Text:**Thermochemical Reaction of Hydrogen Sulfide with Water**
The following thermochemical equation represents the reaction of hydrogen sulfide (H₂S) in the gaseous state with liquid water (H₂O) to form hydrogen gas (H₂) and sulfur dioxide gas (SO₂).
**Reaction:**
\[ \textbf{H}_2\textbf{S(g)} + 2 \textbf{H}_2\textbf{O(g)} \rightarrow 3 \textbf{H}_2\textbf{(g)} + \textbf{SO}_2\textbf{(g)} \hspace{10px} \Delta H = 207 \, \text{kJ} \]
**Details:**
- **ΔH (Enthalpy Change):** The enthalpy change for this reaction is 207 kJ. This value indicates the amount of energy absorbed during the reaction process.
**Problem Statement:**
Determine the amount of energy (in kJ) released or absorbed when 11.6 grams of hydrogen sulfide react with excess water.
**Hint:**
An amount of energy is expressed as a positive number. The sign of ΔH in the thermochemical equation indicates whether energy is absorbed or evolved. In this context, a positive ΔH suggests that energy is absorbed during the reaction.
Fill in the blank: When 11.6 grams of hydrogen sulfide react with excess water, [ ] kJ of energy are [absorbed/evolved].
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