AP 7.3 Reaction Quotient and Equilibrium Constant

If the reaction quotient Q has a smaller value than the related equilibrium constant, K, _________

• the reaction is at equilibrium

• the reaction is not at equilibrium, and will make more products at the expense of the reactants

• the reaction is not at equilibrium, and will make more reactants at the expense of the products

• the value of K will not increase until it is equal to Q

Tags

NGSS.HS-PS1-6

If the reaction quotient Q has a value larger than the related equilibrium constant, K _________

• the reaction is at equilibrium

• the reaction is not at equilibrium, and will make more products at the expense of reactants

• the reaction is not at equilibrium, and will make more reactants at the expense of products

• the value of K will increase until it is equal to Q

If the reaction quotient Q has a smaller value than the related equilibrium constant, K, _________

• the reaction is at equilibrium

• the reaction is not at equilibrium, and will make more products at the expense of the reactants

• the reaction is not at equilibrium, and will make more reactants at the expense of the products

• the value of K will not increase until it is equal to Q

Tags

NGSS.HS-PS1-6

If the reaction quotient Q has a value larger than the related equilibrium constant, K _________

• the reaction is at equilibrium

• the reaction is not at equilibrium, and will make more products at the expense of reactants

• the reaction is not at equilibrium, and will make more reactants at the expense of products

• the value of K will increase until it is equal to Q

If the equilibrium constant is much less than one (K << 1) then

• Equilibrium is not established.
• Equilibrium lies to the right (products are favored)
• Equilibrium lies to the left (reactants are favored)
• Neither products or reactants are favored.

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

The numerical value of the ratio of product concentrations to reactant concentrations, with the concentration of each reactant and product raised to the power corresponding to its coefficient in the balanced equation is called what?

• reversible reaction

• law of chemical equilibrium

• equilibrium constant

• homequilibrium constantogeneous equilibrium

Tags

NGSS.HS-PS1-6

The value of the equilibrium constant, K_eq for the reaction below is 3.1 × 10^-4 at 700K.

N₂ (g) + 3H₂ (g) ↔ 2NH₃ (g)

Given the initial partial pressure of the gases, P_N2 = 0.411 atm; P_H2 = 0.903 atm; P_NH3 = 0.224 atm, calculate the value of the reaction quotient, Q.

• Q = 0.0437

• Q = 0.1658

• Q = 0.6036

• Q = 0.1352

Which of the following statements is true if the equilibrium constant, K, is equal to 1?

• The reaction does not reach equilibrium

• The reaction favors the formation of reactants

• The reaction favors the formation of products

• The reaction is at equilibrium with equal concentrations of reactants and products

In a chemical reaction at equilibrium, what effect does a catalyst have?

• It increases the equilibrium constant, K

• It decreases the equilibrium constant, K

• It speeds up the rate at which equilibrium is reached without affecting the equilibrium position

• It shifts the equilibrium position to favor the formation of products