We are being asked to find how many Liters of 0.750 M NH3 is needed to make a 0.50 L of 0.250 M solution.
When we are adding water (or solvent) to a solution to decrease its concentration, we are diluting the solution.
When dealing with dilution we will use the following equation:
M1 = initial concentration
V1 = initial volume
M2 = final concentration
V2 = final volume
Calculate the initial volume (milliliters needed) of the NH3 solution.
How many liters of 0.750 M NH3(aq) do you need to make a 0.50 L of 0.250 M NH3(aq) solution?