# What does not change when a solution is diluted by addtion of a solvent?

Initially, we have a concentration of $\text{Moles of solute"/"Volume of solution}$.
Now dilution, will increase the volume; it will have no effect on the moles of solute present in the initial solution. And thus $\text{concentration of solute}$ WILL DECREASE...........however, the amount of dissolved substance will remain constant.