Ch.6 - Thermochemistry WorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: A chemical reaction absorbs heat from the surroundings. Therefore it is _________ and has a ________ value of ΔH.A. endothermic, negative B. endothermic, positive C. isothermic (i.e. no change in temperature), zero D. exothermic, positive E. exothermic, negative

Problem

A chemical reaction absorbs heat from the surroundings. Therefore it is _________ and has a ________ value of ΔH.

A. endothermic, negative 

B. endothermic, positive 

C. isothermic (i.e. no change in temperature), zero 

D. exothermic, positive 

E. exothermic, negative

Solution

Establish the definition of exothermic and endothermic reaction and determine which is the proper answer for: A chemical reaction absorbs heat from the surroundings. Therefore it is _________ and has a ________ value of ΔH.

Recall that:

• Exothermic reactions

Solution BlurView Complete Written Solution