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

The combustion of ethane, C2H6, has an enthalpy change of −2857.3 kJ for the reaction as written below. Calculate △H° for the combustion of 15.0 g of C2H6.

2 C2H6(g) + 7 O2(g) → 4 CO2(g) + 6 H2O(g) Δ r H = 2857.3  kJ/mol-rxn

Interpretation Introduction

Interpretation:

The change in enthalpy of ethane when combustion takes place has to be determined.

Concept Introduction:

Standard enthalpy of the reaction:

ΔrHo is the change in enthalpy that happens when matter is transformed by a given chemical reaction, when all reactants and products are in their standard states.

Enthalpy of the reaction:

ΔrH, is the change in enthalpy that happens when matter is transformed by a given chemical reaction

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

  ΔrH=enthalpy change/1000 number of moles

Explanation

Given reaction is

2C2H6(g)+7O2(g)4CO2(g)+6H2O(g)ΔfH0=-2857.3kJ/mol

  ΔrHo=-2857

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

Over-the-counter drugs for obesity are most often effective and pose little risk.

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

All members of a cohort are the same ______. a. sex b. size c. age d. weight

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

Review. The first stage of a Saturn V space vehicle consumed fuel and oxidizer at the rate of 150 104 kg/s with...

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