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chm 110 Chapter 7

Chapter 7: Reaction Rates and Chemical Equilibrium

QuestionAnswer
True or False: Reactions take place at different speeds True
Define Rate of Reaction change of concentration of reactant per unit time
What is initial rate? constant rate verses time
What happens to the rate of reaction as the reactant begins to be used up? it decreases
How do molecules react to each other? by colliding with each other
Why do most collisions do not result in a reaction? because millions of collisions happen per second, thus effecting the rate of reaction. We look at the collisions that make the product
What are some collisions effective and others are not? two reasons: 1.) activation energy- the energy needed for molecules to make a new product 2.) the angle the molecule forms toward another molecule (look at orgchem and how lewis dot structures are angle. There is a reason why they are angled like that
products can not form unless they go "over the hill" read text for explanation
activation energy is __________ _________ to the rate of reaction. inversely related
the speed of reaction is ________ to the __________. proportional, to the probability of effect of collision
What are the four things that the rate of reactions affect when dealing with activation energy level? 1.) nature of reaction 2.) concentration 3.) temperature 4.) presence of a catylist
concentration of a reaction is __________ to the rate of reaction directly proportional
reaction rate increases with ______ increasing temperature
temperature vs effects of reaction temperature increases the collision of molecular forces, thus the # of collisions raises out of total collisions.
Created by: dzelaya
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