Le Chatelier Principle

The following factors affect the position of equilibrium EXCEPT

• Concentration

• Pressure

• Temperature

• States of matter

Tags

NGSS.HS-PS1-5

Equilibrium for 2CrO₄^2- + 2H⁺→Cr₂O₇^2- + H₂O. What happen when OH^- ions are added to the system?

• Position of equilibrium will shift to right

• Color of system will turn from orange to yellow

• K_c will decrease

• OH^- ions will not react, and thus no change is seen.

Tags

NGSS.HS-PS1-5

Le Chatelier's Principle states that if a chemical system at equilibrium is stressed,

• the system will adjust to increase the stress

• the system will adjust to reduce the stress

• the system will not adjust

For N₂ + 3H₂ →2NH₃ . When pressure is increased the equilibrium shift to right. Why?

• To increase the amount of products

• To reduce the pressure, as right has less number of molecule

• K_c will increase when it is shifted to the right

• So it will increase the rate of reaction

2SO₂(g)+O₂(g)⇌2SO₃(g)
Decreasing volume of container will

• shift equilibrium right

• shift equilibrium left

• change K

• have no change

For N₂O₄ (colorless) → 2NO₂ (brown). What happens when pressure is increased?

• Position of equilibrium will shift to right

• Color of system will turn from colorless to brown

• K_c will not change

• Position of equilibrium will not change

This symbol indicates that a reaction is ____________

• reversible

• irreversible

This Law "states that any change to system at equilibrium wil result in an expected shift that countereact the change"

• Le Chatelier Principle

• Boyles Law

• Law of thermodynamics

What happed to the position of equilibrium system when the concentration Br₂ increase.

• forward reaction

• reversed reaction

• remain unchanged

Tags

NGSS.HS-PS1-5

What happened to the equilibrium position when the temperature decreased.

• shift forward

• shift backward

• remain unchange

Tags

NGSS.HS-PS1-6