A) The outer electronic configuration of Cu (29) and Cr (24) are\[3{{d}^{9}},4{{s}^{2}}\]and\[3{{d}^{4}},4{{s}^{2}}\] respectively.
B) \[C{{H}_{3}}CHO\]gives hexamethylenetetramine with\[N{{H}_{3}}\]
C) \[\Delta G=\Delta G{}^\circ \]at equilibrium
D) \[{{A}_{2}}(g)+{{B}_{2}}(g)2AB(g)\]is unaffected by variations in pressure.
Correct Answer: D
Solution :
In the reaction,\[\underset{1\,mol}{\mathop{{{A}_{2}}(g)}}\,+\underset{1\,mol}{\mathop{{{B}_{2}}(g)}}\,\underset{2\,mol}{\mathop{2AB(g)}}\,\] Pressure has no effect on the equilibrium reaction which proceeds with no change in total number of moles
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