LeChatelier's Principle

Question 1

what happens when you add to products?

Answer 1

makes Q>K, speeds up reverse reaction and reaction shifts to reactants

Question 2

what happens when you add to reactants?

Answer 2

makes Q

Question 3

what happens when you remove products?

Answer 3

makes Q

Question 4

what happens when you remove reactants?

Answer 4

makes Q>K, slows down forward reaction (reverse speeds up) and reactions shifts to reactants

Question 5

when you increase pressure (decrease volume) at a constant temperature, what happpens?`

Answer 5

the system wants to respond by decreasing pressure to restore equilibrium

Question 6

what does the system need in order to increase pressure?

Answer 6

more moles of gas

Question 7

what does the system need in order to decrease pressure?

Answer 7

fewer moles of gas

Question 8

for an increase in pressue, the system will respond by proceeding to the side of the ?

Answer 8

most moles of gas

Question 9

will adding a substance not found in the equilibrium expression change the value of Q?

Answer 9

nah

Question 10

what is the effect of decreasing the volume of the reaction mixture?

Answer 10

reaction shifts towards reactants

Question 11

what is the effect of increasing the volume of the reaction mixture?

Answer 11

reaction shifts towards products

Question 12

does a change in pressure or concentration change K value?

Answer 12

nah

Question 13

what does change K value?

Answer 13

temperature

Question 14

in an exothermic reaction heat is?

Answer 14

released

Question 15

what can heat be compared to in an exothermic reaction?

Answer 15

a product

Question 16

in an exothermic reaction, adding heat is similar to adding a product, so in what direction will the reaction shift?

Answer 16

towards the reactants

Question 17

in an exothermic reaction, removing heat is similar to removing a product, so the reaction will shift in what direction?

Answer 17

towards the products

Question 18

in an endothermic reaction, heat is?

Answer 18

absorbed

Question 19

what can heat be compared to in an endothermic reaction?

Answer 19

a reactant

Question 20

in an endothermic reaction, adding heat is similar to adding a reactant, so in what direction will the reaction shift?

Answer 20

towards the products

Question 21

in an endothermic reaction, removing heat is similar to removing a reactant, so in what direction will the reacion shift?

Answer 21

towards the reactants

Question 22

in an exothermic reaction, what is the effect of increasing the temperature of the reaction mixture? (adding heat)

Answer 22

reaction shifts towards reactants

Question 23

in an exothermic reaction, what is the effect of decreasing the temperature of the reaction mixture? (removing heat)

Answer 23

reaction shifts towards products