When two similar liquids mix to form a solution, the entropy of solution is expectted to be:
a.negative
b.zero
c.positive
d.negative at low T and positive at high T
To determine the expected entropy of a solution when two similar liquids mix, we can consider the concept of entropy and the factors that affect it.
Entropy (S) is a measure of the disorder or randomness in a system. When two similar liquids mix, the molecules in the liquid become more randomly arranged, leading to an increase in disorder. This increase in disorder usually corresponds to an increase in entropy.
Therefore, the expected entropy of solution when two similar liquids mix is generally positive (option c). The disorder and randomness of the system increase as the components of the solution become more evenly distributed.
It is important to note that the other options can be eliminated based on the understanding of entropy and the mixing of similar liquids.
Option a (negative) can be eliminated because mixing similar liquids generally leads to an increase in disorder, thus increasing entropy rather than decreasing it.
Option b (zero) can be eliminated because if there is no change in the arrangement or mixing of the components, there will generally be no change in entropy.
Option d (negative at low T and positive at high T) can be eliminated as well. Although the temperature can affect entropy, it does not determine the sign. The increase in entropy upon mixing is primarily driven by the increase in disorder, which is not dependent on temperature in this context.