Consider the reaction cap h sub 2 of g plus cap i sub 2 times g if and only if 2 HI g What is the reaction quotient, cap q , for this system when open bracket cap h sub 2 close bracket is equal to 0 point 1 0 0 cap m , open bracket cap i sub 2 close bracket is equal to 0 point 2 0 0 cap m , and HI is equal to 3 point 5 0 cap m ?
For H₂(g) + I₂(g) ⇌ 2HI(g), the reaction quotient is Qc = [HI]²/([H₂][I₂]). Substitute the concentrations: Qc = (3.50)²/((0.100)(0.200)) = 12.25/0.0200 = 612.5, which rounds to 613. The correct choice is 613.
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