kc= [x)(x)/(2*.76-x)= 1.8
x^2=1.8(1.52-x)
solve that quadratic for x
x^2+1.8x-2.74=0
x= (-1.8+-sqrt(3.24+10.96) )/2
x= -.9+- 3.77/2= ..985 moles/liter
or conce of Pcl5 is 2*.76-.985
check my math.
a 0.76 mol sample of pcl5 is placed in a 500 ml reaction vessel. what is the concentration of pcl5 when the reaction
pcl5(g) ⇀↽ pcl3(g) + cl2(g)
has reached equilibrium at 250◦c (when kc = 1.8)
1 answer
1 answer