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For the exothermic decomposition of HI (g) into H2(g) and I2 (g) at 400 C, Kc=...

For the exothermic decomposition of HI (g) into H2(g) and I2 (g) at 400 C, Kc= 0.0183

a) If 80 g of HI is placed in a 2.5 L chamber at 400 C, what are the conc. of all species when the system comes to equlibrium?

b) How much HI (in g) must be added to the reaction to make 0.050 amount of H2 at equilibrium?

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