Homework Help: college chemistry

Posted by sparkle on Sunday, October 3, 2010 at 10:48pm.

If the initial concentration of F(g) is 8.285 mol/L, calculate the % decomposition of F(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kc at 927.0 °C is 370.00. The initial concentration of the reaction products is 0 mol/L.

2F(g) = F2(g)

college chemistry - DrBob222, Sunday, October 3, 2010 at 11:17pm
You have the balanced equation.
Set up an ICE chart, substitute into Kc and solve.
initial:
F = 8.285 M
F2 = 0

change:
F2 = +x
F = -2x

equilibrium:
F = 8.285-2x
F2 = x
college chemistry - sparkle, Monday, October 4, 2010 at 5:12pm
i don't understand..

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