Le Chatelier's Principle

Which changes occur when O2(g) is added to this

system?

• The equilibrium shifts to the right and the

  concentration of PCl3(g) increases.

• The equilibrium shifts to the right and the

  concentration of PCl3(g) decreases.

• The equilibrium shifts to the left and the

  concentration of PCl3(g) increases.

• The equilibrium shifts to the left and the

  concentration of PCl3(g) decreases.

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Which change will cause the equilibrium to shift to

the right?

• adding a catalyst

• adding more PCl3(g)

• increasing the pressure

• increasing the temperature

Tags

NGSS.HS-PS1-6

The addition of a catalyst will

• shift the equilibrium to the right

• shift the equilibrium to the left

• increase the rate of forward and reverse

  reactions equally

• have no effect on the forward or reverse

  reactions

Tags

NGSS.HS-PS1-6

The formation of ammonia is favored by

• an increase in pressure

• a decrease in pressure

• removal of N2(g)

• removal of H2(g)

Tags

NGSS.HS-PS1-6

Which change causes the equilibrium to shift to the

right?

• adding a catalyst

• adding more O2(g)

• decreasing the pressure

• increasing the temperature

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Which change favors the reverse reaction?

• decreasing the concentration of HI(g)

• decreasing the temperature

• increasing the concentration of I2(g)

• increasing the pressure

Tags

NGSS.HS-PS1-5

Increasing the temperature of the system causes the

concentration of

• HI to increase

• H2 to increase

• HI to remain constant

• H2 to remain constant

Tags

NGSS.HS-PS1-5

The concentration of A(g) can be increased by

• lowering the temperature

• adding a catalyst

• increasing the concentration of AB(g)

• increasing the concentration of B(g)

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Which changes occur when the temperature of this

system is decreased?

• The concentration of H2(g) increases and the

  concentration of N2(g) increases.

• The concentration of H2(g) decreases and the

  concentration of N2(g) increases.

• The concentration of H2(g) decreases and the

  concentration of NH3(g) decreases.

• The concentration of H2(g) decreases and the

  concentration of NH3(g) increases.

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Which change will not shift the point of

equilibrium?

• changing the pressure

• changing the temperature

• changing the concentration of H2(g)

• changing the concentration of HF(g)

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6