+91-8076753736[email protected]
logo
logo
-->

States Of Matter

Question
CBSEENCH11005944
Wired Faculty App

A neon-dioxygen mixture contains 70.6 g dioxygen and 167·5 g neon. If pressure of the mixture of gases in the cylinder is 25 bar, what is the partial pressure of dioxygen and neon in the mixture? 

Solution

Weight of dioxygen (O2) = 70.6 g
Molar mass of dioxygen  = 32 g mol-1

therefore space space space Number space of space moles space of space dioxygen space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space fraction numerator 70.6 over denominator 32 space straight g space mol to the power of negative 1 end exponent end fraction space equals space 2.21 space mol Weight space of space neon space equals space 167.5 space straight g Molar space mass space of space neon space equals space 20 space straight g space mol to the power of negative 1 end exponent
Number space of space moles space of space neon space equals space fraction numerator 167.5 space straight g over denominator 20 space straight g space mol to the power of negative 1 end exponent end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 8.375 space mol Mole space fraction space of space dioxygen space equals space fraction numerator 2.21 over denominator 2.21 plus 8.375 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 2.21 over denominator 10.585 end fraction space equals 0.21 space space space space space space space space space space space space space space space
Mole fraction of neon
              space equals space fraction numerator 8.375 over denominator 2.21 plus 8.375 end fraction space equals space fraction numerator 8.375 over denominator 10.585 end fraction space equals space 0.79
We know,
   Partial pressure of a gas = Mole fraction x Total pressure
      therefore   Partial pressure of  a gas  = Mole fraction x total pressure
                        = 0.21 x 25 bar = 5.25 bar
Partial pressure of neon = 0.79 x 25 bar = 19.75 bar

Some More Questions From States of Matter Chapter

What is the absolute zero temperature?

Can absolute zero temperature be attained for a gas?

How pressure of a given sample of gas is related to absolute temperature at constant volume?

How is the pressure of a gas related to the number of molecules of the gas at constant temperature and volume?

What is standard (or normal) temperature and pressure (STP)?

What does SATP stand for? Define it.

What is the value of molar volume at STP?

What is standard molar volume?

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation