What does Dalton's law of partial pressure mean?

1 Answer
Aug 15, 2016

Answer:

It means we can solve problems like this one.

Explanation:

And in a gaseous mixture, the partial pressure exerted by a component gas is the same as the pressure it would exert if that component ALONE had occupied the container. The total pressure is the sum of the individual partial pressures.

#P_"Total"# #=# #P_1 +P_2+P_3+................+P_n#

But if we assume ideality, then #P=(nRT)/V#

And thus,

#P_"Total"# #=# #(n_1RT)/V+(n_1RT)/V.............(n_nRT)/V#

#=# #(RT)/V{n_1+n_2+................n_n}#

#=# #(RT)/V*Sigman_i#, where #n_i# is the amount in moles of each particular gas.

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