Chapter 6, Problem 87AE

Consider the decomposition of the compound ${\text{C}}_{\text{5}}{\text{H}}_{\text{6}}{\text{O}}_{\text{3}}$ as follows:

${\text{C}}_{\text{5}}{\text{H}}_{\text{6}}{\text{O}}_{\text{3}}\text{(}g\text{)}\rightleftharpoons {\text{C}}_{\text{2}}{\text{H}}_{\text{6}}\text{(}g\text{)+3CO(}g\text{)}$

When a 5.63-g sample of pure ${\text{C}}_{\text{5}}{\text{H}}_{\text{6}}{\text{O}}_{\text{3}}\text{(}g\text{)}$ was sealed inan otherwise empty 2.50-L flask and heated to 200.°C,the pressure in the flask gradually rose to 1.63 atm andremained at that value. Calculate K for this reaction.