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Chemistry
Chemistry
Problem
At
298
K
298\,\text{K}
298
K
, a reaction has
Δ
H
∘
=
−
125
kJ mol
−
1
\Delta H^\circ = -125\,\text{kJ mol}^{-1}
Δ
H
∘
=
−
125
kJ mol
−
1
and
Δ
S
∘
=
−
250
J mol
−
1
K
−
1
\Delta S^\circ = -250\,\text{J mol}^{-1}\,\text{K}^{-1}
Δ
S
∘
=
−
250
J mol
−
1
K
−
1
. Using
R
=
8.314
J mol
−
1
K
−
1
R = 8.314\,\text{J mol}^{-1}\,\text{K}^{-1}
R
=
8.314
J mol
−
1
K
−
1
, what is the value of the equilibrium constant
K
K
K
at
298
K
298\,\text{K}
298
K
? a)
≈
6
×
10
−
9
\approx 6\times10^{-9}
≈
6
×
1
0
−
9
b)
≈
7
×
10
8
\approx 7\times10^{8}
≈
7
×
1
0
8
c)
≈
2.5
×
10
20
\approx 2.5\times10^{20}
≈
2.5
×
1
0
20
d)
≈
9
×
10
34
\approx 9\times10^{34}
≈
9
×
1
0
34
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