What volume at #"SLC"# is occupied by an #88*g# mass of carbon dioxide?

#A.# #49*L;#
#B.# #24.5*L;#
#C.# #98*L;#
#D.# #"Cannot be determined."#

1 Answer
anor277
Apr 2, 2016

Option #A#, #49# #L#.

Explanation:

Now you have #(88.0*g)/(44.0*g*mol^-1)# #=# #2*mol# #CO_2(g)#.

For this molar quantity of course we could solve the Ideal Gas equation, but, we know that #1# #mol# of Ideal Gas has a volume of #24.5# #L# under standard conditions of #298# #K# and #1# #atm#. I think that this is even given as supplementary information in the A level exams. Since we have #2# #mol#, there will be twice this molar volume.

The actual experimental volume will be very close to this value, as we have a regime of moderate pressures, and reasonably high temperatures.

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