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Chemistry

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Lexie Crooks

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Cards in this guide (17)
What is meant by the rate of reaction

The rate of reaction refers to the speed at which a reaction proceeds.

Is plastic a thermal conductor or insulator

It is a thermal insulator

An increase in temperature will cause the rate of a chemical reaction to

increased temperture causes rate or reaction to increase.

What happens to the reaction rate as the reactants get used up in a reaction

The rate of the reaction begins to decrease as reactants are used up

Which of the following conclusions can be drawn from the curves in the energy diagram

. The reaction represented by curve B will go faster than the curve A reaction.

What information does an equilibrium constant give about a reaction

It tells whether products or reactants are favored at equilibrium

What causes the reaction rate to decrease as the reaction progresses

The concentration of the reactants decreases.

What happens to the potential energy of the molecules in a reaction

The potential energy of the molecules change during a reaction.

How does increasing the temperature affect a reaction

Increasing temperature affects a reaction in two ways:

1) at higher temperatures the molecules are moving around faster and collisions and reactions are more frequent, so the reaction - both forward and reverse - speed up.

2) at higher temperatures, the equilibrium state will shift. In some cases it will shift the equilibrium towards the product. In other cases, it will shift it back towards the reactants.

What would happen to the rate of a reaction with rate law kNO2H2 if the concentration of NO were doubled

the rate would be four times larger. apex

What is the rate constant of a reaction if rate 1 10-2 molLs A is 2 M B is 3 M m 2 and n 1

4.5 (moI/L)/s -apex

What describes a reaction that reaches equilibrium

The product and reactants reach a final, unchanging level.

What is the name of the field of study with laws that describe how energy is transferred to different locations and forms

Thermodynamics

Which of the following best describes a bronsted lowry acid base reaction

Acid + Base = Salt+Water (APEX)

What phase has the lowest entropy

solid-apex

What of the following is a characteristic of a weak acid

It does not dissociate completely in water

What does it mean if Keq is less than 1

Reactants are favored over products in the reaction.

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