# chemistry

posted by
**Andy** on
.

for the equilibrium H2+CO2<-->H2O+CO

Kc=3.18 at 1106K. if each of the four species was initially present at 3.000M calculate the equilibrium concentration of the CO at this temperature.....

OK I can get as far as equilibrium (final)

H2O=3.000-x

CO=3.000-xx

H2=3.000+x

CO2=3.000+x

substitute the equil.numbers into the KC expression and solve for x.Then add 3.000 or subtract x from 3.000 to arrive at individual concentration...

This is the bit I don't know how to do Could some one please go through it step by step please and show me how to get final answer...

Choices

0.844

3.268

3.844

3.460

2.156

Thanks Andy