Physical Chemistry I Lecture 2 1 DALTONS LAW OF PARTIAL PRESSU

Physical Chemistry Lecture DALTONS LAW PARTIAL PRESSURES The Total Pressure Mixture Gases Equal The Sum The Partial Pressures All The

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Physical Chemistry I Lecture 2 1 DALTONS LAW OF PARTIAL PRESSURES The Total Pressure Of A Mixture Of Gases Is Equal To The Sum Of The Partial Pressures Of All The Gases Present Mathematically P Total P 1 P 2 P 3 V And T Are Constant Where P 1 P 2 And P 3 Are Partial Pressures Of The Three Gases 1 2 And 3 Daltons Law Of And Ideal Gas Equation PV N RT We Can Write The Partial Pressures P 1 P 2 And P 3 Of The Three Gases Physical Chemistry I Lecture 2 2 Example What Pressure Is Exerted By A Mixture Of 2 00 G Of H 2 And 8 00 G Of N 2 At 273 K In A 10 Litre Vessel Solution GRAHAMS LAW OF DIFFUSION When Two Gases Are Placed In Contact They Mix Spontaneously This Is Due To The Movement Of Molecules Of One Gas Into The Other Gas  Graham Observed That Molecules With Smaller Masses Diffused Faster Than Heavy Molecules Large Molecules Slow Motion

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