d. Kinetic barriers can stop a reaction even if there is a thermodynamic driving force for transformation. e. The rate of a reaction is more sensitive to temperature changes if the acti- vation energy is smaller. f. The rate of a reaction depends on the free energy change for the reaction.
d. Kinetic barriers can stop a reaction even if there is a thermodynamic driving force for transformation. e. The rate of a reaction is more sensitive to temperature changes if the acti- vation energy is smaller. f. The rate of a reaction depends on the free energy change for the reaction.
Chemistry
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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d. Kinetic barriers can stop a reaction even if there is a thermodynamic driving
force for transformation.
e. The rate of a reaction is more sensitive to temperature changes if the acti-
vation energy is smaller.
f. The rate of a reaction depends on the free energy change for the reaction.
g. The "saddle point" is the highest point on a potential energy surface.
h. For a given activation energy, temperature changes have more effect on the
rate constant at lower temperatures.
i. A process is operating at a mean temperature; the temperature oscillating
with a fixed frequency for a given time; the extent of reaction is more if the
amplitude of temperature fluctuation is greater.
j.I A catalyst cannot change the driving force of a reaction.
k.. The rate constant of a reaction increases a hundredfold when the tempera-
ture rise is 200 °C. The rate constant will increasing more than fifty times if
the temperature rise is 100 °C.
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