   # Using data from Appendix 4, calculate ∆G for the reaction 2 H 2 S ( g ) + SO 2 ( g ) ⇌ 3 S rhombic ( s ) + 2 H 2 O ( g ) for the following conditions at 25°C: P H 2 S = 1.0 × 10 − 4 atm P SO 2 = 1.0 × 10 − 2 atm P H 2 O = 3.0 × 10 − 2 atm ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 16, Problem 66E
Textbook Problem
8 views

## Using data from Appendix 4, calculate ∆G for the reaction 2 H 2 S ( g ) + SO 2 ( g ) ⇌ 3 S rhombic ( s ) + 2 H 2 O ( g ) for the following conditions at 25°C: P H 2 S = 1.0 × 10 − 4 atm P SO 2 = 1.0 × 10 − 2 atm P H 2 O = 3.0 × 10 − 2 atm

Interpretation Introduction

Interpretation: The reaction of H2S and SO2 , pressure of each reactant, product and value of temperature of this reaction is given. The value of ΔG is to be calculated by using data from Appendix 4 .

Concept introduction: Reaction quotient, Q , is the measure of concentration or partial pressure of reactants and products of a system before equilibrium point is reached.

ΔG=ΔG°+RTln(Q)

### Explanation of Solution

The reaction that takes place is,

2H2S(g)+SO2(g)3Srhombic(s)+2H2O(g)

Refer to Appendix 4 .

The value of ΔG°(kJ/mol) for the given reactant and product is,

 Molecules ΔG°(kJ/mol) H2S(g) −34 SO2(g) −300 Srhombic(g) 0 H2O(g) −229

The formula of ΔG° is,

ΔG°=npΔG°(product)nfΔG°(reactant)

Where,

• np is number of moles of each product.
• nr is number of moles each reactant.
• ΔG°(product) is free energy of product at a pressure of 1atm .
• ΔG°(reactant) is free energy of reactant at a pressure of 1atm .

Substitute all values from the table in the above equation.

ΔG°=npΔG°(product)nfΔG°(reactant)=[3(0)+2(229){2(34)+(300)}]kJ=90kJ_

Given

Pressure of H2S , PH2S , is 1.00×104atm .

Pressure of SO2 , PSO2 , is 1.00×102atm .

Pressure of H2O , PH2O , is 3.00×102atm .

Formula

The reaction quotient, is expressed by the formula,

Q=PressureofproductsPressureofreactants

Where,

• Q is the reaction quotient.

The reaction quotient expression for the given reaction is,

Q=(PH2O)2(PH2S)2(PSO2)

Substitute the values of PH2O,PH2S and PSO2 in the above expression

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Find more solutions based on key concepts
Which of the following is not one of the ways fats are useful in foods? Fats contribute to the taste and smell ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

The enzyme trypsin is sold as a dietary supplement. What happens to trypsin taken with food?

Biology: The Unity and Diversity of Life (MindTap Course List)

What is meant by the phrase green chemistry?

Chemistry & Chemical Reactivity

What are the chemical differences between DNA and RNA?

Biology: The Dynamic Science (MindTap Course List)

23. Name each compound:

Chemistry In Focus

A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed...

Physics for Scientists and Engineers, Technology Update (No access codes included) 