9.
A 5.0 L flask contains 19.5g of SO3 and 1.0 g of
He gas at 20°C. Calculate the partial pressures
exerted by SO3 and He and the total pressure of
the gaseous mixture.
Answers
Answered by
2
Answer:
So all we have to do is use the
Ideal Gas Law:
P
component
=
n
component
×
R
×
T
V
, and use a suitable
Gas constant,
R
, with appropriate units.
P
O
2
=
(
1.031
⋅
g
32.00
⋅
g
⋅
m
o
l
−
1
)
×
0.0821
⋅
L
⋅
a
t
m
K
⋅
m
o
l
×
291
⋅
K
10
⋅
L
=
0.0770
⋅
a
t
m
P
C
O
2
=
(
0.572
⋅
g
44.01
⋅
g
⋅
m
o
l
−
1
)
×
0.0821
⋅
L
⋅
a
t
m
K
⋅
m
o
l
×
291
⋅
K
10
⋅
L
=
0.0311
⋅
a
t
m
P
Total
=
P
O
2
+
P
C
O
2
And
mole fraction
O
2
=
P
O
2
P
O
2
+
P
C
O
2
, i.e. the partial pressure of dioxygen divided by the total pressure.
Answered by
9
Answer:
Explanation:
First calculate total no of moles. Then calculate total pressure using PV=nRT. tThen calculate indivdual pressure using P(ind) = mole fraction×total pressure
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