Question

Which factor causes a decrease in the rate of dissolution?
decreasing the amount of solute
increasing the stirring of the solution
decreasing the surface area of the solute
increasing the temperature of the solvent

Answer 1

can someone help me with this other question i narrowed it down to two possible answers?

What is the relationship between the concentration of particles in a solution and the solution’s vapor pressure?
--- B As solute concentration increases, vapor pressure decreases.
--- D As the concentration of electrolytes increases, vapor pressure decreases. However, as the concentration of nonelectrolytes increases, vapor pressure increases.

Answer 2

For your first question, I believe the correct answer is C. Decreasing the area of the solute is the only one of the options provided which leads to a lower rate of dissolution. In this case, when we do this we are making it more difficult for all of the solute particles to sufficiently interact with the solvent so that dissolution occurs.

Answer 3

for your 2nd question : electrolytes are those substances which dissociate in to ions when come in contect with water or any other solution . as electrolyte dissociates so concentration of solute or ions increases so vapour pressure decreases . but if non electrolyte is used it can not dissociate in to ions so vapour pressure increases

Answer 4

vapuor pressure of any solution is inversely proportion to its solute particles present in solution

Answer 5

@chem101help i hope you will get my point