Solve 31th:

31. A 1 M solution of glucose reaches dissociation equilibrium according to equation given below $6HCHO \rightleftharpoons C_6{H}_{12}{O}_6$. What is the concentration of HCHO at equilibrium if equilibrium constant is 6 x 10²²

(a) 1.6 x 10^-8 M                        (b) 3.2 x 10^-6 M
(c) 3.2 x 10^-4   M                         (d) 1.6 x 10^{-4 M}