Question 1 and three, what should I consider when doing this kind of problem? Th

Question

Question 1 and three, what should I consider when doing this kind of problem? Thanks! Question 1 and three, what should I consider when doing this kind of problem? Thanks! Without referring to tables, rank the following oxides from lowest to highes substance is at the same temperature. Each vii a. Na20(s) b. Li20(s) .K20(s) Without referring to tabies, predict which of the following will have the greatest molar entropy. Each substance is at the same temperature. a. O2(g) b. Na20(s) c. Bao(s) d. H200) have the greatest molar entr opy. Each substance is at the same temperature. 2. N2ig) b. 02(g) C. NO(g) d. Ar(g) Thermodnamics: Calculating Standard Entropy Change

Explanation / Answer

Ans 1 :

The entropy is the degree of disorderness and randomness of the system. The molar entropy of the compound depends on the size of its ions.

Since here the smallest is Li and largest is K , so the lowest molar entropy is of Li2O and highest is of K2O.

The order from lowest to highest will be :

Li2O < Na2O < K2O

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