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 system that does work on its surroundings.If the amount of zinc used in the reaction is increased, will more work be done by the system? Is there additional information you need in order to answe

Problem

A diagram shows a flask containing HCl (aqueous).  The top of the flask leads to a piston, and the side of the flask has a small inlet for Zn (solid).  After some zinc is added, the inlet is closed, and the following reaction takes place in the flask: Zn (solid) plus 2 H+ (aqueous) goes to Zn2+ (aqueous) plus H2 (gas). The flask now contains H2 gas plus the original atmosphere.  The piston has moved up; the increase in volume means the system does pressure-volume work.
A system that does work on its surroundings.

If the amount of zinc used in the reaction is increased, will more work be done by the system? Is there additional information you need in order to answer this question?