Four solutes are added to a solvent. All solutes have the same mass and solubility. The surface areas of four solutes are 2
mm², 4 mm, 6 mm?, and 10 mm. Which solute will dissolve the quickest?
O 2 mm?
4 mm
6 mm
10 mm?
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10

Explanation:

The solute that will dissolve quickest is the one with 10 surface area.

Generally, rate of reaction of reaction is directly proportional to the surface area of reactants. That is, the higher the surface area of reactants, the higher the rate of reaction.

Hence, in a reaction involving the dissolution of solute in a solvent, the solute with the highest surface area will have the highest rate of reaction and hence, dissolves quickest.

The highest surface area from the options is 10 , the solute with this surface area will therefore dissolves the quickest.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

b.final