3.17


8H_2O\left(g\right)+6CO\left(g\right)\xrightleftharpoons[]{}H_2\left(g\right)+CO_2\left(g\right)

K_c=2{,}0
K_c=\frac{\left[H_2\right]\left[CO_2\right]}{\left[H_2O\right]\left[CO\right]}\Rightarrow2{,}0=\frac{x^2}{14}
x=\pm2\sqrt{7}\approx\pm5{,}2915
vain positiivinen voi olla oikein kys. tilanteessa
\left[H_2O\right]=8-5{,}2915\approx2{,}7
\left[CO\right]=6-2{,}5915\approx0{,}7\
\left[H_2\right]=0+5{,}2915\approx5{,}3
\left[CO_2\right]=0+5{,}2915\approx5{,}3