Calculate the standard entropy of formation, Delta S^circ f of CO_(2)(g) Given the standard entropies of CO_(2)(g),C(s),O_(2)(g) which are 213.65.740,and 205.0JK^-1 respectively.

The standard entropy of formation, , of a compound is defined as the standard entropy of the formation of the compound from its constituent elements in their standard states. In this case, we are given the standard entropies of , , and , which are 213.65 J/mol·K, 5.0 J/mol·K, and 205.0 J/mol·K, respectively. To calculate the standard entropy of formation of , we can use the following equation: Substituting the given values into the equation, we get: Simplifying the equation, we find: Therefore, the standard entropy of formation of is -13.65 J/mol·K.