平衡常數問題

[NCUEKLKL (鳥實驗室~硍)]

At a particular temperature 12mol of SO3 is placed into a 3L container
and the SO3 dissociates by the reaction 2SO3(g)= 2SO2(g) + O2(g)
At equilibrium 3mol of SO2 is present
求平衡常數

A) 6
B) 1.5
C) 0.065
D) 0.032
單位mol/L

這一題我是求 1.5
不過我不太確定 覺得怪怪的  請告位高手指教一下



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推 shok:我怎麼算出0.056   奇怪勒
→ nicemoda:我也是0.056
推 achernarsw:也是0.056