Question

Consider the reaction:
2SO2(g)+O2(g)→2SO3(g)

a) If 287.8 mL of SO2 reacts with 166.6 mL of O2 (both measured at 323 K and 67 mbar ), what is the limiting reactant?

b) What is the theoretical yield of SO3?

c) If 180.2 mL of SO3 is collected (measured at 323 K and 67 mbar ), what is the percent yield for the reaction?

Answer 1

V=287.8 mL = = 0.2878 L. Criven reaction in - 250 g + 02 (9) 250319) from the given data, Fa So 287.8 mx al 1000 mL I P = 67 mbal = 67 X10 3 bar 7- 323K from ideal gar, equation, PUCART C I (67x10 bal) (0128782) h at RT (8:314 x 17ž.bau. Il mel) (323K) noong) -0.000718 moll Similarly, Vo = 16616 mL z Voz = 0.1666 L from ideal gas equation na pv - (67X10 bar 0.1666 L) RT (8.314x10 Libar Kimot) (323k) norgs = 0.000415 mol From the balanced equation, it is clear that, 1 ml 021g, required 2 md sorg 4. 0000 415 ml O2 g) required ? mad song = 0.000415 x2 mol = 0.00083 mol - But we have only 0.0007 18 hd song Hence, limiting reaitant = S029) 6 It is clear that, Soro) is limiting reactant. from balanced equation, and so, produres 2 md. So39) _ . 287.8 ml prodie s ? ml song = 28708 ml The critical yield of sogg - 287.8 mL 7 yield - Obtainot yold u x loo - XTOO = 62.612 287.8 ml Thesittel geld 17 yleld = 62.6