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CBSE Class 11-science Answered

The pressure for a mixture of gases neon and dioxgen in a cylinder is 25bar. Calculate the partial pressure of O2 and Ne if 70.6gms of O2 and 167.5 gms of Ne are present in the mixture.
Asked by HIMANSHI SHARMA | 11 Oct, 2013, 08:35: PM
answered-by-expert Expert Answer

Solution:

Number of moles of dioxygen = 70.6g           = 2.21 mol

                                              32gmol-1

Number of moles of neon = 167.5g       = 8.375 mol

                                        20gmol-1

 

Mole fraction of dioxygen =   2.21              =     0.21                        

                                          (2.21 +8.375)

Mole fraction of neon = 1 – 0.21 = 0.79

Partial pressure of gas = Mole fraction × Total pressure

Partial pressure of O2 = 0.21 × 25 bar = 5.25 bar

Partial pressure of Ne = 0.79 × 25 bar = 19.75 bar

Answered by Vaibhav Chavan | 14 Oct, 2013, 01:28: PM

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