CHEMICAL EQUILIBRIUM CHUCHUNESS

Question 1

Chemical reactions that can occur in either direction are called

Answer 1

REVERSIBLE REACTIONS

Question 2

Chemical equilibrium exists when two opposing reactions occur __________ at the same rate.

Answer 2

SIMULTANEOUSLY

Question 3

Three types of changes can disturb the equilibrium of a reaction.

Answer 3

1. Changes in CONCENTRATION
2. Changes in PRESSURE or volume
   (for reactions that involve gases)
3. Changes in TEMPERATURE

Question 4

When the reaction shift to the RIGHT, it favors the _______ reaction.

Answer 4

FORWARD

Question 5

When the reaction shift to the RIGHT, ____ products are formed.

Answer 5

MORE

Question 6

When the reaction shift to the LEFT, it favors the _______ reaction.

Answer 6

REVERSE

Question 7

When the reaction shift to the LEFT, ____ products are formed.

Answer 7

LESS

Question 8

Blood red complex soln

Answer 8

FeSCN+2

Question 9

Clear yellowish

Answer 9

Fe+3

Question 10

SCN-

Answer 10

COLORLESS

Question 11

Fe+3 + SCN-

Answer 11

FeSCN+2
Blood red complex soln

Question 12

Addition of Fe(NO3)3

Answer 12

DARKER Blood red complex

Question 13

FeCl6-3

Answer 13

COLORLESS SOLN

Question 14

Lighter Blood red complex

Answer 14

FeSCN+2

Question 15

Addition of KCl

Answer 15

LighterBlood red complex

Question 16

White ppt

Answer 16

AgSCN

Question 17

WHITE PPT

Answer 17

AgSCN

Question 18

White ppt -> Colorless soln

Answer 18

Fe(H2PO4)3

Question 19

Addition of KH2PO4

Answer 19

White ppt -> Colorless soln

Question 20

Fe(OH)3

Answer 20

Orange to brown ppt

Question 21

Addition of NH4OH

Answer 21

Orange to brown ppt

Question 22

this DOES NOT affect the equilibrium however, it does slightly dilute the color

Answer 22

WATER

Question 23

RELEASES Heat, ∆ (Assume heat as PRODUCT)

Answer 23

EXOTHERMIC REACTION

Question 24

ABSORBS Heat, ∆ (Assume heat as REACTANT)

Answer 24

ENDOTHERMIC REACTION