Le Chatelier Principle

Suggest a way to increase the concentration of C₂H₆.

• increase the concentration C₂H₄

• decrease the concentration H₂

• decrease concentration of C₂H₄

• increase the temperature

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

How the equilibrium system will react when the volume of the tank decrease.

• produce more C

• produce more A and B

• remain unchanged

• reduce formation of C

Tags

NGSS.HS-PS1-6

What happed to the position of equilibrium when the concentration Br₂ increase?

• forward reaction

• reversed reaction

• remain unchanged

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

What happened to the equilibrium position when the temperature decreased.

• shift forward

• shift backward

• remain unchange

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Predict the colour of solution if more Fe³⁺ added to an equilibrium system.

• yellow

• blood red

• colorless

• orange

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Predict the colour of solution if SCN^- removed from the test tube.

• yellow

• blood red

• colorless

• orange

Tags

NGSS.HS-PS1-2

For an exothermic reaction,

Kc=50.0 at 100K. Predict the value of Kc at 300K

• =50.0

• < 50.0

• > 50.0

• increase the temperature

• increase a pressure

• decrease a pressure

• decrease the temperature

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6