Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN: 9780534420123
Author: Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher: Cengage Learning
bartleby

Videos

Textbook Question
Book Icon
Chapter 5, Problem 5.1QE

Why must the physical states of all reactants and products be specified in a thermochemical equation?

Expert Solution & Answer
Check Mark
Interpretation Introduction

Interpretation:

Reason for why the physical states of all reactants and products be specified in a thermochemical equation has to be explained.

Explanation of Solution

If ΔH is given in a chemical equation, then it is a thermochemical equation. The enthalpy of a compound depends on its physical state. The value of enthalpy change varies according to the physical state. Therefore, it is important to include the physical states of all reactants and products be specified in a thermochemical equation.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Chapter 5 Solutions

Chemistry: Principles and Practice

Ch. 5 - Prob. 5.11QECh. 5 - Is the Sun exothermic or endothermic? Is it any...Ch. 5 - Under what circumstances is the heat of a process...Ch. 5 - Prob. 5.14QECh. 5 - Prob. 5.15QECh. 5 - Prob. 5.16QECh. 5 - Prob. 5.17QECh. 5 - Prob. 5.18QECh. 5 - Prob. 5.19QECh. 5 - Prob. 5.20QECh. 5 - Prob. 5.21QECh. 5 - Prob. 5.22QECh. 5 - Prob. 5.23QECh. 5 - Prob. 5.24QECh. 5 - Prob. 5.25QECh. 5 - Prob. 5.26QECh. 5 - Prob. 5.27QECh. 5 - Prob. 5.28QECh. 5 - Prob. 5.29QECh. 5 - Prob. 5.30QECh. 5 - Prob. 5.31QECh. 5 - A chemical reaction occurs and absorbs 64.7 cal....Ch. 5 - The enthalpy change for the following reaction is...Ch. 5 - Prob. 5.34QECh. 5 - The thermochemical equation for the burning of...Ch. 5 - When lightning strikes, the energy can force...Ch. 5 - One step in the manufacturing of sulfuric acid is...Ch. 5 - If nitric acid were sufficiently heated, it can be...Ch. 5 - Prob. 5.39QECh. 5 - Prob. 5.40QECh. 5 - Prob. 5.41QECh. 5 - The combustion of 1.00 mol liquid methyl alcohol...Ch. 5 - Another reaction that is used to propel rockets is...Ch. 5 - Prob. 5.44QECh. 5 - Prob. 5.45QECh. 5 - Prob. 5.46QECh. 5 - Prob. 5.47QECh. 5 - Prob. 5.48QECh. 5 - Prob. 5.49QECh. 5 - Prob. 5.50QECh. 5 - The enthalpy change when 1 mol methane (CH4) is...Ch. 5 - Prob. 5.52QECh. 5 - Prob. 5.53QECh. 5 - How much energy is required to raise the...Ch. 5 - How much heat, in kilojoules, must be removed to...Ch. 5 - Prob. 5.56QECh. 5 - Prob. 5.57QECh. 5 - Prob. 5.58QECh. 5 - Prob. 5.59QECh. 5 - Prob. 5.60QECh. 5 - When 7.11 g NH4NO3 is added to 100 mL water, the...Ch. 5 - A 50-mL solution of a dilute AgNO3 solution is...Ch. 5 - A 0.470-g sample of magnesium reacts with 200 g...Ch. 5 - Dissolving 6.00 g CaCl2 in 300 mL of water causes...Ch. 5 - Draw an energy-level diagram (e.g., see Figure...Ch. 5 - Prob. 5.66QECh. 5 - Prob. 5.67QECh. 5 - Prob. 5.68QECh. 5 - Calculate H for the reaction...Ch. 5 - Prob. 5.70QECh. 5 - Given the thermochemical equations...Ch. 5 - In the process of isolating iron from its ores,...Ch. 5 - Prob. 5.73QECh. 5 - Prob. 5.75QECh. 5 - Prob. 5.77QECh. 5 - Prob. 5.78QECh. 5 - Prob. 5.79QECh. 5 - Prob. 5.80QECh. 5 - Prob. 5.81QECh. 5 - Prob. 5.82QECh. 5 - Calculate H when a 38-g sample of glucose,...Ch. 5 - Prob. 5.84QECh. 5 - The octane number of gasoline is based on a...Ch. 5 - One of the components of jet engine fuel is...Ch. 5 - Prob. 5.87QECh. 5 - Prob. 5.88QECh. 5 - When a 2.30-g sample of magnesium dissolves in...Ch. 5 - Prob. 5.90QECh. 5 - Prob. 5.91QECh. 5 - What mass of acetylene, C2H2(g), must be burned to...Ch. 5 - It takes 677 J of heat to increase the temperature...Ch. 5 - Prob. 5.94QECh. 5 - Prob. 5.96QECh. 5 - The enthalpy of combustion of liquid n-hexane,...Ch. 5 - What is Hrxn for reaction of iron(III) oxide and...Ch. 5 - Prob. 5.99QECh. 5 - Prob. 5.100QECh. 5 - In the 1880s, Frederick Trouton noted that the...Ch. 5 - Prob. 5.102QECh. 5 - Prob. 5.103QECh. 5 - Prob. 5.104QECh. 5 - Prob. 5.105QECh. 5 - A compound is 82.7% carbon and 17.3% hydrogen, and...Ch. 5 - Prob. 5.107QECh. 5 - Prob. 5.108QE
Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Text book image
World of Chemistry
Chemistry
ISBN:9780618562763
Author:Steven S. Zumdahl
Publisher:Houghton Mifflin College Div
Text book image
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
Text book image
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
Text book image
Living By Chemistry: First Edition Textbook
Chemistry
ISBN:9781559539418
Author:Angelica Stacy
Publisher:MAC HIGHER
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY