Question

A student has a solution of sodium nitrate and believes it is saturated. Which statement provides the best evidence that the solution is saturated?

A) When more water is added, the appearance of the solution doesn’t change.

B) When some of the water evaporates, all of the sodium nitrate remains dissolved.

C) When a small amount of sodium nitrate is added, a large amount precipitates from the solution.

D) When additional sodium nitrate is added, it all settles to the bottom of the container.

E) When the temperature of the solution is increased, additional sodium nitrate can be dissolved.

Answer 1

Answer:

D

Explanation:

saturated means that no more of the substance will dissolve. Anything that doesn't dissolve will settle to the bottom.

Answer 2

Answer: Option (D) is the correct answer.

Explanation:

A saturated solution is defined as the solution which contains maximum amount of solute into the solvent.

And, on adding more amount of solute it will not be able to dissolve into the solvent. This shows that saturation point has reached and the solution is saturated.

So, at this point the excess of solute which is not able to dissolve will settle down at the bottom.

Thus, we can conclude that the statement when additional sodium nitrate is added, it all settles to the bottom of the container is the best evidence that the solution is saturated.