The equilibrium constant, Kc, for the following
reaction is 5.89×10-4 at
635 K.
NH4I(s)<-->NH3(g)
+ HI(g)
Calculate Kc at this temperature for the following
reaction:
NH3(g) + HI(g)
<-->NH4I(s)
Kc=?
The given reaction is:
NH4I(s) <-> NH3(g) + HI(g)
Kc = [NH3][HI]
= 5.89*10^-4
The required reaction is:
NH3(g) + HI(g) <-> NH4I(s)
Use:
Kc’ = 1/([NH3][HI])
= 1/ Kc
= 1/(5.89*10^-4)
= 1.70*10^3
Answer: 1.70*10^3
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