A dlute solution of bromine in carbon tetrachloride behaves as an ideal dilute s

Question

A dlute solution of bromine in carbon tetrachloride behaves as an ideal dilute solution. The vapour pressure of pure CCl4 is 33 85 Tor at 298 K.The Henry's law constant when the concentration of Brz is expressed as a mole traction is 122 36 Torr. If the mole faction of Br2 s0 02 and the conditions of the ideal dilute solution are satisfied at this concentration, calculate the vapour pressure of each component P(CC4. Toml-[PAI P(Br2, Tor [PBL the total pressure, P(total, Tor) |Pl, and the composition of the vapour phase y(CCI4) IYA) and y(Br2)-IYB) Ple ase enter your answers with 2 decimals For example, 23.456 is written as 23.46

Explanation / Answer

Answer.

Solute (Br2) :-

PB= XBKB

PB= PBr2= 0.02*(122.36)=2.4472 torr=2.44 torr

Solvent (CCl4):-

PA= XAPA*

XA=1-XB=1-0.02=0.98

Therefore PA=PCCl4=0.98*(33.85)=33.173 torr=33.17torr

and PTotal=PA+PB=2.4472+33.173=35.6202 torr=35.62 torr

Hence, YBr2=PB/PTotal=2.4472/35.6202

=0.06 torr.

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