Equilibrium Constants

Front

What does a small K_c value indicate about the concentrations of reactants and products?

Back

A small K_c value indicates that the concentration of reactants is high and the concentration of products is low.

Front

Write the equilibrium-constant expression for the reaction: CO₂(g) + H₂(g) ↔ CO(g) + H₂O(l)

Back

K_c = [CO] / [CO₂][H₂]

Front

What does a Keq value of 1x10^-8 suggest about the favorability of reactants and products?

Back

It suggests that reactants are favored.

Front

What is the reaction that corresponds to the K_c expression: K_c = [NO₂]²/[N₂O₄] ?

Back

N₂O₄(g) ↔ 2 NO₂(g)

Front

Define equilibrium constant (K_c).

Back

The equilibrium constant (K_c) is a numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium.

Front

What is the significance of K_c being greater than 1?

Back

If K_c is greater than 1, it indicates that products are favored at equilibrium.

Front

What does it mean if K_c is less than 1?

Back

If K_c is less than 1, it indicates that reactants are favored at equilibrium.

Front

How do you write the equilibrium constant expression for a general reaction aA + bB ↔ cC + dD?

Back

K_c = [C]^c[D]^d / [A]^a[B]^b.

Front

What is the effect of temperature on the equilibrium constant?

Back

The equilibrium constant (K_c) changes with temperature; it is specific to a particular temperature.

Front

What is the relationship between K_c and K_p?

Back

K_c and K_p are related by the equation K_p = K_c(RT)^Δn, where Δn is the change in moles of gas.