BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Chloroform, CHCl3, is formed from methane and chlorine in the following reaction.

CH4(g) + 3 Cl2(g) → 3 HCl(g) + CHCl3(g)

Calculate ΔrH°, the enthalpy change for this reaction, using the enthalpies of formation of CO2(g), H2O(), CHCI3(g) (ΔfH° = –103.1 kJ/mol), and the enthalpy changes for the following reactions:

CH4(g) + 2 O2(g) → 2 H2O() + CO2(g)

ΔrH° = –890.4 kJ/mol-rxn

2 HCl(g) → H2(g) + Cl2(g)

Δr = +184.6 kJ/mol-rans

Interpretation Introduction

Interpretation:

The enthalpy change for the reaction of has to be calculated.

Concept Introduction:

The standard enthalpy change of combustion of a compound is the enthalpy change which occurs when one gram of the compound is burned completely in oxygen under standard conditions, and with everything in its standard state.

                       ΔrH0imagesΣnΔfH0(products)-ΣnΔfH0(reactants)

Explanation

Given,

CH4+2O22H2O + CO2                                                ΔfH0-890.4kJ

Reverse the 2nd equation and multiply by 3.

3/2 H+ 3/2Cl23HCl                                                    ΔfH0-276.9kJ

Inorder to consume the CO2 formed in the 1st equation reverse the formation of CO2.

CO2C + O                                                                 ΔfH0-393.5kJ

In order to consume the H2O formed in the 1st equation reverse the formation of H2O

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

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

A built environment can support physical activity with a. safe biking and walking lanes. b. public parks. c. fr...

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

What are the moral implications of using ergogenic aids?

Understanding Nutrition (MindTap Course List)

List the differences between mitosis and meiosis in the following chart:

Human Heredity: Principles and Issues (MindTap Course List)

An air-filled parallel-plate capacitor has plates of area 2.30 cm2 separated by 1.50 mm. (a) Find the value of ...

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