Multiple Choice
Calculate the concentration (M) of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M solution of Na₂S to a total volume of 250.0 mL.
6. Chemical Quantities & Aqueous Reactions
Dilutions
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What is the final volume when 15.00 mL of a 4.50 M HCl solution is diluted to a final concentration of 0.750 M?
A
30.00 mL
B
45.00 mL
C
90.00 mL
D
60.00 mL
Verified step by step guidance1
Identify the initial concentration (C1) and initial volume (V1) of the solution. Here, C1 = 4.50 M and V1 = 15.00 mL.
Identify the final concentration (C2) of the solution, which is given as 0.750 M.
Use the dilution formula, which is C1 * V1 = C2 * V2, where V2 is the final volume we need to find.
Rearrange the dilution formula to solve for V2: V2 = (C1 * V1) / C2.
Substitute the known values into the equation: V2 = (4.50 M * 15.00 mL) / 0.750 M, and solve for V2 to find the final volume.
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