Question

pick the number the statement which is not a characteristic of solutions: 1. the components of the solution are dispersed as separate particles closely surrounded by solvent particles 2. the physical state of the solution tends to be that exhibited by the solvent 3. they are heterogeneous with differing concentrations throughout 4. the dissolved solute does not settle out from the solvent over time 5. the concentration of solute can be varied continuously within the limits of the solutes solubility in the solvent question 8 1 pts the formation of a solution is a process that occurs spontaneously and generally results in a ____ in the energy and a ____ of matter of the overall system. increase, dispersal

Explanation:

1. Solutions have solute particles dispersed among solvent particles, so statement 1 is correct.
2. The physical - state of a solution is often that of the solvent, so statement 2 is correct.
3. Solutions are homogeneous mixtures with uniform concentration throughout, not heterogeneous as stated in 3, so statement 3 is incorrect.
4. In a solution, the dissolved solute does not settle out over time, so statement 4 is correct.
5. The concentration of solute can be varied within the solubility limits, so statement 5 is correct.

For the second question, the formation of a solution is a spontaneous process that generally results in a decrease in energy (due to favorable interactions) and a dispersal of matter.

Answer:

For the first question: 3
For the second question: decrease, dispersal