Ch.13 - Chemical KineticsWorksheetSee 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: The graph shown displays the effect of two different temperatures on the distribution of kinetic energies of molecules in a sample. One temperature is named "Lower T" and is graphed in b

Problem

A graph has kinetic energy on the x-axis and fraction of molecules on the y-axis. Both axes are unscaled. Two hump-shaped curves are plotted; one for lower temperature and one for higher temperature. A vertical dotted line at the midway point of the x-axis is the minimum energy needed for the reaction, Ea. Both temperature curves peak to the left of the minimum energy needed, with only their right tails crossing this line. The lower temperature peak is higher and to the left of the higher temperature peak, but the tail of the higher temperature peak crosses the minimum energy line higher than the tail of the lower temperature peak, meaning that at higher temperatures a larger fraction of molecules react.


The graph shown displays the effect of two different temperatures on the distribution of kinetic energies of molecules in a sample. One temperature is named "Lower T" and is graphed in blue. The other temperature is named "Higher T" and is graphed in red.

If there was a third, new temperature that would be graphed in green and would display the effect of a greater, even higher temperature than "Higher T" on the distribution of kinetic energies of molecules in a sample, describe the shape and relative height of this new green curve as it relates to the existing red "Higher T" curve in the graph.