12. If two substances are soluble in all proportions then they arein each other

Question

12. If two substances are soluble in all proportions then they arein each other a. miscible b. nonpolar c. immiscible d. neutral e polar 13. Choose the statement below that is true a. A solution will form between two substances if the solute-solvent interactions are of comparable strength to the solute-solute and solvent-solvent interactions. b. A solution will form between two substances if the solute-solvent interactions are small enough to be overcome by the solute-solute and solvent-solvent c. A solution will form between two substances if the solute-solute interactions are d. A solution will form between two substances only if the solvent-solvent e. None of the above is true. interactions strong enough to overcome the solvent-solvent interactions. interactions are weak enough to overcome the solute-solvent interactions. 14. Light beams that are visible in a dusty room is an example of a. an emulsion. b. an aerosol. c. micelle repulsion. d. Brownian motion. e. Tyndall effect 15. A solution in which the dissolved solute is in dynamic equilibrium with the solid solute is called a. an unsaturated solution. b. a dilute solution. c. a supersaturated solution. d. a concentrated solution. e. a saturated solution. 16. A colloid can be defined as: a. a mixture in which a substance floats on the dispersing medium b. a mixture in which a substance is dissolved in a solute c. a mixture in which a substance is dissolved in a solvent d. a mixture in which a substance settles to the bottom of a dispersing medium e. a mixture in which a dispersed substance is finely divided in a dispersing medium

Explanation / Answer

Q12

if they are all soluble:

the species are called miscible

which implies they mix in one another

Q13

solution forms only if solute -solvent interactions are stronger than solute-solute and solvent-solvent

choose A only

Q14

This is the famous tyndall effect, which allows light to prpagate

Q15

if in equilbrium, this must be already in saturation

therefore, choose E

Q16

the phase msut be dispersed, therefore, only E contains this "Key" element of colloids

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