Question

After which action would the concentration of a solution remain constant?(1 point)
Responses

adding water to the solution
adding water to the solution

adding solute to the solution
adding solute to the solution

evaporating water from the container
evaporating water from the container

removing solution from the container

Answer 1

The concentration of a solution would remain constant after **adding solute to the solution**.

When solute is added, the amount of solute increases without a change in the volume of the solution (at least initially), which can maintain or change the concentration depending on the volume changes.

On the other hand:

- **Adding water to the solution** would dilute the solution, lowering the concentration.
- **Evaporating water from the container** would increase the concentration since the amount of solute remains the same while the volume decreases.
- **Removing solution from the container** would also change the concentration based on what is being removed—if it is removing both solute and solvent, the concentration may increase or decrease depending on the relative amounts.

In summary, adding solute can maintain or change concentration, but the others will alter it.