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For N2(g) + 3H2(g) to 2NH3(g), the value of dn used in Kp = Kc(RT)^dn is
A-1
B+2
C+1
D-2
Answer & Solution
Correct answer: D. -2
Gaseous product moles minus reactant moles is 2 - 4 = -2.
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