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NEET2011ChemistryStates of MatterActual

56 g of nitrogen and 96 g of oxygen are mixed isothermally and at a total pressure of 10 atm . The partial pressures of oxygen and nitrogen (in atm) are respectively

Options

  1. A4,6
  2. B5,5
  3. C2,8
  4. D6,4

Correct answer

D. 6,4

Step-by-step solution

According to Dalton's law, p_ solute =x_ solute p Given, mass of N ₂=56 ~g Moles of N ₂ (n_ N ₂ )= 56 28 =2 ~mol Mass of O ₂=96 ~g Moles of O ₂ (n_ O ₂ )= 96 32 =3 ~mol x_ N ₂ = 2 2+3 =0.4x_ O ₂ = 3 2+3 =0.6 p_ N ₂ =x_ N ₂ p=0.4 10=4 ~atm p_ O ₂ =x_ O ₂ p=0.6 10=6 ~atm

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