`NH_(4)HS(s)hArrNH_(3)(g)+H_(2)S(g)` The equilibrium pressure at `25^(@)C` is 0.660 atm . What is `K_(p)` for the reaction?
A
0.109
B
`0.218`
C
`1.89`
D
`2.18`
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The correct Answer is:
a
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