How to Evaluate Standard Entropy of Reaction?
Standard entropies of reaction, DSoreaction, equals the entropy of products minus the entropy of reactants. Since the entropies of most substances have been measured and tabulated in handbooks and data banks, standard entropies of reactions can be evaluated in a similar manner as enthalpies of reactions. Similarly, when you put a drop of ink into a cup of water, the ink disperse into the water, or water disperse into the ink. In this process, the entropy is higher, because an increase of disorder results in an increase of entropy. Example 2 Evaluate the entropy change for the reaction: CO + 3 H2 -> CH4 + H2O in which all reactants and products are gaseous. Solution Standard entropies of reaction, DSoreaction, equals the entropy of products minus the entropy of reactants.
Related Questions
- Why is there DNA in the no-template control reaction when using the standard REPLI-g procedure, but not when using the UltraFast procedure?
- How can you precdict spontaneity of a reaction by knowing enthalpy, entropy, and temperature?
- how does an exothermic reaction change the entropy of the reactions surroundings?
