   # Use standard enthalpies of formation in Appendix L to calculate enthalpy changes for the following: (a) 0.054 g of sulfur burns, forming SO 2 (g) (b) 0.20 mol of HgO(s) decomposes to Hg( ℓ ) and O 2 (g) (c) 2.40 g of NH 3 (g) is formed from N 2 (g) and excess H 2 (g) (d) 1.05 × 10 –2 mol of carbon is oxidized to CO 2 (g) ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 5, Problem 58PS
Textbook Problem
82 views

## Use standard enthalpies of formation in Appendix L to calculate enthalpy changes for the following:(a) 0.054 g of sulfur burns, forming SO2(g)(b) 0.20 mol of HgO(s) decomposes to Hg(ℓ) and O2(g)(c) 2.40 g of NH3(g) is formed from N2(g) and excess H2(g)(d) 1.05 × 10–2 mol of carbon is oxidized to CO2(g)

(a)

Interpretation Introduction

Interpretation:

The enthalpy change for the formation the following reaction has to be determined.

Concept Introduction:

If a reaction proceeds in two or more other reaction,ΔrH0 for the overall process is the sum of ΔrH0 values of all those reactions-Hess’s law.

The change in enthalpy, ΔH in kJ per mole of a given reactant for the reaction can be calculated as:

ΔrH=enthalpy changenumber of moles

ΔrH=ΔHnumber of moles

### Explanation of Solution

Given mass is 1.0g

The enthalpy of formation is  -296.8 KJ/Mol

S+O2SO2  ΔfH0= -296.8 KJ/Mol

The change in enthalpy, ΔH in kJ per mole of a given reactant for the reaction can be calculated as:

Δ

(b)

Interpretation Introduction

Interpretation:

The enthalpy change for the formation the following reaction has to be determined.

Concept Introduction:

If a reaction proceeds in two or more other reaction,ΔrH0 for the overall process is the sum of ΔrH0 values of all those reactions-Hess’s law.

(c)

Interpretation Introduction

Interpretation:

The enthalpy change for the formation the following reaction has to be determined.

Concept Introduction:

If a reaction proceeds in two or more other reaction,ΔrH0 for the overall process is the sum of ΔrH0 values of all those reactions-Hess’s law

(d)

Interpretation Introduction

Interpretation:

The enthalpy change for the formation the following reaction has to be determined.

Concept Introduction:

If a reaction proceeds in two or more other reaction,ΔrH0 for the overall process is the sum of ΔrH0 values of all those reactions-Hess’s law.

### 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
Carnitine supplements a. are fat burners that increase cellular energy. b. raise muscle carnitine concentration...

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

Why are titanium oxide features visible in the spectra of only the coolest stars?

Horizons: Exploring the Universe (MindTap Course List)

25-66 Can dATP Serve as a source for a primer?

Introduction to General, Organic and Biochemistry

The picture lube in an old black-and-white television uses magnetic deflection coils rather than electric defle...

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

Clams and squid are in the same phylum. How can that be?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin 