Helium balloon at a pressure, Chemistry

Assignment Help:

A 10L helium balloon at a pressure of two bar at 27C. Some O2 is now inside in balloon and final volume is made 30L. the pressure also fell to 1 bar at similar temperature. the partial pressure of O2 at end is?

Solution) For helium.

 n(He)=P(1)V(1)/RT.
for oxygen n(O)=P(2)V(2)/RT

partial pressure of O2= (mole fraction of O2).(Total pressure)

= [  P(2).V(2) / P(2).V(2) + P(1).V(1)  ].(1)
= 1.30 / 1.30 + 2.10
=30/30+20=3/5 bar
Hence 0.6 bar (ANS)


Related Discussions:- Helium balloon at a pressure

Scale formation and sludge formation in boilers, Q. Explain scale formation...

Q. Explain scale formation and sludge formation in boilers. How are they formed?     Ans Boilers are used for steam generation. When hard water is evaporated, progressively

Electrolysis, If 8686 C of charge is passed through molten magnesium chlori...

If 8686 C of charge is passed through molten magnesium chloride, calculate the number of moles of Mg(l) produced

Why is zinc not extracted from zinc oxide?, Why is Zinc not extracted from ...

Why is Zinc not extracted from ZInc oxide throgh reduction with CO?? Ans) Reducing agent should have more negative ΔG value. In case of zinc oxide ,Zn has more negative ΔG value t

Chemical properties of alkyl halides, Chemical Properties of Alkyl Halides ...

Chemical Properties of Alkyl Halides The alkyl halides are very reactive; the sequence of reactivity is as follow:             Iodide > Bromide > Chloride (Nature of the hal

Stoichiometry and Mole Concept, What volume of oxygen would be required to ...

What volume of oxygen would be required to burn completely 200 ml of acetylene and what would be the volume of carbon dioxide formed?

What is diborane, Q. What is Diborane? The chemistry of diborane has ar...

Q. What is Diborane? The chemistry of diborane has aroused considerable interest because of its usefulness in many synthetic reactions and also because the elucidation of its s

How to calculate percent yield, Q. How to calculate Percent Yield? Ans...

Q. How to calculate Percent Yield? Ans. When you make cookies the recipe may claim to make a certain number of them, but usually in the end there are less. There might be

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd