Question

Calculate the molarity of the following solutions.81.5 g of hcl in 2.50 l of a hcl solution

Answer 1

To find the molarity of an HCl solution, first convert the mass of HCl to moles using its molar mass (36.5 g/mol), and then divide by the volume of the solution in liters. For 81.5 g of HCl in 2.50 L, the molarity is 0.892 M.

Step-by-step explanation:

To calculate the molarity of HCl in a solution, you need to follow these steps:

1. Convert the mass of HCl to moles. The molar mass of HCl is 36.5 g/mol.
2. Divide the number of moles by the volume of the solution in liters to get the molarity.

First, we calculate the moles of HCl:

81.5 g HCl × (1 mol HCl / 36.5 g HCl) = 2.23 moles HCl

Then, we calculate the molarity:

Molarity = moles of solute / liters of solution = 2.23 moles HCl / 2.50 L = 0.892 M

The molarity of the HCl solution is 0.892 M.