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Gaseous State: Ideal Gases
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Eudiometry
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Difficulty 1 of 3
ig009
In a eudiometer,
20
mL
of
H
X
2
is mixed with
20
mL
of
O
X
2
and exploded. After cooling to room temperature, the volume of the residual gas is
A
10
mL
B
20
mL
C
30
mL
D
0
mL
Answer: A
2
H
X
2
+
O
X
2
2
H
X
2
O
.
20
mL
of
H
X
2
needs
10
mL
of
O
X
2
. Water is a liquid at room temperature, so the only gas left is the unreacted
O
X
2
,
20
−
10
=
10
mL
.
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