anonymous
  • anonymous
80.0 liters of oxygen gas is collected over water at 50 degrees celcius. the atomsphereic pressure in the room is 96.00 kPA. what is the partial pressure of oxygen?
Chemistry
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
daltons law
anonymous
  • anonymous
daltons law means?
anonymous
  • anonymous
total pressure is all the pressures added up

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anonymous
  • anonymous
1/2O2 +H2------------------->H2O 80 litres ok now first u convert temperature into kelvin and pressure into atm
anonymous
  • anonymous
i am not sure but this could be an approach: assuming ideal behaviour of oxygen usin PV=nRT there for n u can use the relation n=given mass/molar mass given mass=density*volume Oxygen Density is 1.429 g/L find n then find p of oxygen gas then as u guys say when can say that is the partial pressure exerted by oxygen in a mixture wud contribute to absolute pressure=partial pressure absolute pressure=pressure of gas-atmospheric pressure find it
anonymous
  • anonymous
i agree wid u evn i done half part but i m just lacking how to cal partial pressure of oxygen from the whole system.. and here if u ll take partial presure it will be of all system not only oxygen @salini
anonymous
  • anonymous
absolute pressure is pressure of gas with respect to atmospheric pressure RELATIVE PRESSURE
anonymous
  • anonymous
i agree but here they are asking for oxygen not Kc ok
anonymous
  • anonymous
that was just my idea i dunno to which extent it is correct but with the given data this method looked most suitable:)
anonymous
  • anonymous
its.....so simple just use the ideal gas equation PV=NRT

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