If I add 1.50 L of water to 250 mL of a 12.5 M NaOH solution, what will the molarity of the diluted solution be?

The molarity of the diluted solution is 1.786 M

Explanation:

Dilution is a process in which you always start with a concentrated solution to which a greater volume of solvent is added. This modifies the concentration and volume of the resulting solution, but the amount of solute used to prepare the initial solution remains the same.

In summary, in a dilution the amount of solute does not vary, but the volume of the solvent varies: when more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

The following rule is fulfilled:

Vinicial x Cinicial = Vfinal x Cfinal

where:

In this case:

Replacing:

0.25 L* 12.5 M= 1.75 L* Cfinal

Solving:

Cfinal= 1.786 M

The molarity of the diluted solution is 1.786 M

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.