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
Sections
Internal Energy
Calorimetry
Hess's Law
Enthalpy of Formation
End of Chapter 6 Problems
Additional Practice
Units of Energy
Endothermic & Exothermic Reactions
Additional Guides
Enthalpy

Solution: Given the following balanced equation,2 Na(s) + 2 H2O(l) → 2 NaOH(aq) + H2(g)               ∆Hrxn = −368.4 kJwhich statement(s) is/are True?     I) The reaction is endothermic.II) The heat associated for reacting 1 mole of H 2O(l) is −184.2 kJ.III) The temperature of the solution increases when the reaction is carried out in a coffee-cup calorimeter. A) I only      B) II only     C) III only         D) both I and II         E) both II and III

Problem

Given the following balanced equation,

2 Na(s) + 2 H2O(l) → 2 NaOH(aq) + H2(g)               ∆Hrxn = −368.4 kJ

which statement(s) is/are True?    

 

I) The reaction is endothermic.

II) The heat associated for reacting 1 mole of H 2O(l) is −184.2 kJ.

III) The temperature of the solution increases when the reaction is carried out in a coffee-cup calorimeter.

 

A) I only      

B) II only     

C) III only         

D) both I and II         

E) both II and III