Question

CX.4: For the cyclic trimerisation of acetylene to
give one mole of benzene, K =4 L´mol. If
the equilibrium concentration of benzene is 0.5
mol L, calculate the equilibrium
concentration of acetylene.​

Answer 1

Answer:

So the given reaction is $3C_{2} H_{2}$⇔$C_{6} H_{6}$

$K_{c} =[C_{6}H_{6}  ]/[C_{2} H_{2} ]^{3}$

then put the above values in given formula:

$[C_{6} H_{6} ]=4.0*(0.5)^{3}$

                            =0.5mol/L