Lab 4-Le Chatlier's principle

Question 1

Le Chatlier’s principle

Answer 1

Is a simple guideline to help predict the effect of conditional changes on chemical equilibrium, the direction of the shift. Qualitative

Question 2

Equilibrium experiencing a change

Answer 2

The equilibrium of the system would adjust to minimize the effects of the change.

Question 3

Conditional changes examples

Answer 3

Pressure, temperature, concentration

Question 4

Equilibrium

Answer 4

Dynamic. Is reacting from products to reactants at the same rate as reactants to products. Reactions naturally reach this phase

Question 5

Increase a reactants concentration

Answer 5

Would result in more products being made, and therefore a shift right

Question 6

Decrease a reactants concentration

Answer 6

Would result in more products reacting to become reactants, which would be a shift left

Question 7

Increased pressure

Answer 7

A shift right as more reactants would be bumping into each other and forming products

Question 8

Haber process

Answer 8

Is when a reaction proceeds left to right, it is exothermic

Question 9

Increased temperature

Answer 9

Would result in a shift left as the system tries to accommodate the extra heat is N+H—NH3+ Heat

Question 10

Visual transition interval

Answer 10

The pH range an indicator changes color in

Question 11

Bromothymol blue visual transition interval

Answer 11

6.0(yellow)-7.6(blue)

Question 12

Fe3+ and SCN-

Answer 12

Two colorless components that combine to form a molecule red in color

Question 13

Reactions with Fe

Answer 13

The darker the red color the more of a shift right has occured