Consider the following equilibrium of the weak base NH_3, NH_3 + H_2O Doublehead
ID: 535395 • Letter: C
Question
Consider the following equilibrium of the weak base NH_3, NH_3 + H_2O Doubleheadarrow NH^+_4 + OH^- a. What happens when a strong acid like HCI is added? b. What happens when a strong base like NaOH is added? Consider the following hypothetical equilibrium. 2A Doubleheadarrow B a. if [A] = 1 and [B] = 1, then what is the value of Q? b. if a dilution takes place such that [A] = 1/2 and [B] = 1/2, what is the value of Q? c. if K = 1 for this reaction, what direction will the equilibrium shift when a dilution takes place?Explanation / Answer
2)
a ) when strong acid is added the equilibrium will shift towards forward direction (right)
because H+ and react with OH- , so product concentration decreases .
b) on addition of NaOH the equilibrium will shift towards backward direction (left)
on increase in product concentration the reaction shifts backward direction
3)
a) Q = [B] / [A]^2
Q = 1 / 1^2
Q = 1
b)
Q = (1/2) / (1/2)^2
Q = 0.5
c)
if K = 1 it is exactly at equilibrium . so the reaction will not shift either of the directions