3 answers

A gaseous mixture containing...

Question:

A gaseous mixture containing 1.5 molAr and 3.5 mol CO2 has a total pressure of 7.0 atm. Whatis the partial pressure of CO2?

A. 1.8 atm
B. 2.1 atm
C. 3.5 atm
D. 4.9 atm
E. 2.4 atm


Answers

Is D.

We know thatPartial Pressure Of compount = (Mole fraction ofCompount)(Total pressure )GvenMoles of Ar = 1.5molMoles of CO2 = 3.5molTotal Pressure = 7 atmWe need to calculate Molefraction of CO2Mole fraction ofCO2 = moles of CO2 / Total moles=3.5 mol / (1.5 + 3.5) mol=0.7PartialPressure of CO2 = ?Partial pressure of CO2 = 0.7*7 atm=4.9 atmHence.

Yes the right answer is D.

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