(A) If 0.150 mol H₂(g) and 0.200 mol I₂(g) are introduced into a 15.0 L flask at 445 °C and allowed to come to equilibrium, how many moles of HI(g) will be present?

(B) Suppose the equilibrium mixture of Example 15-12 is transferred to a 10.0 L flask. 

(a) Will the equilibrium amount of N₂O₄ increase or decrease? Explain. 

(b) Calculate the number of moles of N₂O₄ in the new equilibrium condition.

Example 15-12

A 0.0240 mol sample of N₂O₄(g) is allowed to come to equilibrium with NO₂(g) in a 0.372 L flask at 25 °C. Calculate the amount of N₂O₄ present at equilibrium (Fig. 15-9).

Figure 15-9

Transcribed Image Text:

H₂(g) + I2(g) = 2 HI(g) Kc = 50.2 at 445 °C