A) 68 Torr
B) 140 Torr
C) 48 Torr
D) 72 Torr
E) 54 Torr
Correct Answer: D
Solution :
Moles of X, \[{{n}_{x}}=\frac{3}{3+2}=\frac{3}{5}\] Moles of V, \[{{n}_{y}}=\frac{2}{3+2}=\frac{2}{5}\] \[{{p}_{T}}={{p}_{x}}{{n}_{x}}+{{p}_{y}}{{n}_{y}}\] \[=80\times \frac{3}{5}+60\times \frac{2}{5}\] \[=48+24=72\,Torr\]
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