Answer:
(a)
(b)
Explanation:
Hello,
(a) In this case, for the given chemical reaction, the law of mass action becomes:
In such a way, as 1.20 g of benzyl alcohol are placed into a 2.00-L vessel, the initial concentration is:
Hence, by writing the law of mass action in terms of the change due to equilibrium:
Solving for by using a quadratic equation one obtains:
Thus, the equilibrium concentration of benzyl alcohol is computed:
With that concentration the partial pressure results:
(b) Now, the fraction of benzyl alcohol that is dissociated relates its equilibrium concentration with its initial concentration:
Best regards.