Equilibrium #2

When K_eq > 1, 

• There are more products than reactants when the reaction reached equilibrium.
• There are more reactant than products when the reaction reached equilibrium.
• The amount of reactants is equal to the amount of products.

Tags

NGSS.HS-PS1-6

Forward reaction is favored when

• K is less than 1

• K is greater than 1

• K is equal to zero

Tags

NGSS.HS-PS1-6

When the reaction is reversed,

• K for the reverse equals K for the forward reaction

• K for the reverse is the negative of K for the forward reaction

• K for the reverse is the reciprocal of K for the forward reaction

When two reactions are added, then their equilibrium constants are:

• multiplied

• added

• subtracted

• none of the above

What is the value for the reaction N₂(g) + 2O₂(g) ↔ N₂O₄(g) in terms of the K values for the following reactions:

1/2 N₂(g) + 1/2 O₂(g) ↔ NO(g) K₁

2 NO(g) + O₂(g) ↔ N₂O₄(g) K₂

• K₁ + K₂

• K₁² + K₂

• 2 K₁ x K₂

• K₁² x K₂

Given the K_c for a forward reaction, how can you find K_c for the reverse reaction?

• Divide K_c by 1

• Divide 1 by K_c

• Square K_c

• Take the square root of K_c

An equilibrium constant with a large value, e.g. K_c = 1000, indicates…

• A very fast reaction
• Mostly products at equilibrium
• Mostly reactants at equilibrium
• Nothing useful at all

Tags

NGSS.HS-PS1-6

What is [H₂O] if K = 1.2,
[CO₂] = 0.846M, & [CH₄]= 0.0713M?
4CuO_(s)+CH_4(g)↔CO_2(g)+4Cu_(s) +2H₂O_(g)

• 0.101 M
• 0.318 M
• 0.0102 M
• 3.77 M

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-7

H_2(g) +I_2(g) ↔ 2HI_(g)

All gases begin with an initial concentration of 2.0 M. Equilibrium is established, and the concentration of HI is known to be 4.8 M. What is the value of the equilibrium constant?

• 1.2

• 2.4

• 32

• 64

Tags

NGSS.HS-PS1-6

Which of the two graphs reaches equilibrium?

• The left one.
• The right one.
• Both of them.
• Neither.

Tags

NGSS.HS-PS1-6