What is the molarity of a solution containing 72.9 grams of HCL in Enough for the to make 500ML of solution.

Answer 1

To determine the molarity of the HCl solution, we need to use the formula:

Molarity = moles of solute / volume of solution (in liters)

Step 1: Convert the given mass of HCl to moles:

molarity = (72.9 g HCl) / (36.46 g/mol HCl)
molarity = 1.999 moles HCl

Step 2: Convert the given volume of solution to liters:

volume = 500 mL = 0.5 L

Step 3: Calculate the molarity:

molarity = 1.999 moles / 0.5 L
molarity = 3.998 M or approximately 4.0 M

Therefore, the molarity of the HCl solution is 4.0 M.