Question

What is the molarity of a solution created by adding 530mL of water to 275mL of a .270 M HCl solution?

Answer 1

To find the molarity of the resulting solution after mixing water with the HCl solution, we can use the concept of moles of solute and volume of solution.

Given: Volume of HCl solution = 275 mL Molarity of HCl solution = 0.270 M

Volume of water added = 530 mL

Step 1: Calculate the moles of HCl in the original solution. Moles of HCl = Molarity * Volume (in liters) Moles of HCl = 0.270 M * (275 mL / 1000) = 0.07425 moles

Step 2: Calculate the total volume of the resulting solution. Total volume = Volume of HCl solution + Volume of water Total volume = 275 mL + 530 mL = 805 mL = 0.805 L

Step 3: Calculate the molarity of the resulting solution. Molarity of resulting solution = Moles of solute / Total volume (in liters) Molarity of resulting solution = 0.07425 moles / 0.805 L ≈ 0.092 M

The molarity of the resulting solution is approximately 0.092 M.