Two moles of ammonia are introduced in an evacuated \( 500 \mathrm{~mL} \) vessel at high temper...

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Two moles of ammonia are introduced in an evacuated \( 500 \mathrm{~mL} \) vessel at high temperature. The decomposition reaction is:
math xmlns=http://www.w3.org/1998/Math/MathMLmn2/mnmsubmiNH/mimn3/mn/msubmo(/momo /momi mathvariant=normalg/mimo)/momo⇌/momsubmi mathvariant=normalN/mimn2/mn/msubmo(/momo /momi mathvariant=normalg/mimo)/momo+/momn3/mnmsubmi mathvariant=normalH/mimn2/mn/msubmo(/momo /momi mathvariant=normalg/mimo)/mo/math
At the equilibrium \( \mathrm{NH}_{3} \) becomes 1 mole then the value of \( \mathrm{K} \) would be
(A) \(0.42\)
(B) \(6.75\)
(C) \(1.7\)
(D) \(1.5\)
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