Molecules of so2, and o2, react to give
SO3,. Molecules of so3, decompose to give
SO2, and 02,. What types of molecules are
present at equilibrium?
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Answer:
(a) 2SO
2
+O
2
⇌2SO
3
K=100
At a x a
eqd a/10 x/10 a/10
const
K
C
=
(x/10)(a/10)
2
(a/10)
2
=100
100
1
=
10
x
⇒x=1/10
0.1 moles of O
2
are present .
(b) 2SO
2
+O
2
⇌2SO
3
At a x 2a
eq a/10 x/10 2a/10
conc
K
C
=
(x/10)(a/10)
2
(
10
2a
)
2
⇒
x/10
4
=100
x=4/10=0.4 moles of O
2
.
Explanation:
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