The circle at right represents a portion of a mixture of four gases: Gas A (purp

Question

The circle at right represents a portion of a mixture of four gases: Gas A (purple), Gas B (brown), Gas C (green), and Gas D2 (orange). 0e (a) Which gas has the highest partial pressure? Gas A has the highest partial pressure . Gas B has the highest partial pressure Gas C has the highest partial pressure Gas D; has the highest partial pressure (b) Which gas has the lowest partial pressure? Gas A has the lowest partial pressure Gas B has the lowest partial pressure Gas C has the lowest partial pressure Gas D; has the lowest partial pressure

Explanation / Answer

Number of gaseous molecules or atoms

A(purple) = 4

B(Brown) = 3

C(Green) = 5

D2(orange) = 4

Total pressure = partial pressure of X * mole fraction of X

Mole fraction is directly proportional to number of atoms or molecules.

a) highest partial pressure is gas C (green) .there are five atoms.

Answer option C

b) lowest partial pressure is gas B)(brown) only three atoms are there.

Answer option B)

c) mole fraction of D = 4 / (4+3+5+4) => 0.25

So partial pressure = 0.25 * 0.781 => 0.195 atm

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