Question

Calculate the molarity of a solution prepared by dissolving 11.8 g of HCl in enough water to make 3.40 L of solution?

Answer 1

To find the molarity of the HCl solution, calculate the moles of HCl and divide by the volume of the solution in liters to get a molarity of 0.095 M.

Step-by-step explanation:

To calculate the molarity of a solution prepared by dissolving 11.8 g of HCl in enough water to make 3.40 L of solution, you need to follow two steps:

1. Calculate the number of moles of HCl using the formula: moles = mass (g) / molar mass (g/mol). The molar mass of HCl is approximately 36.46 g/mol, so moles of HCl = 11.8 g / 36.46 g/mol = 0.323 moles.
2. Calculate the molarity using the formula: molarity = moles of solute/liters of solution. Therefore, the molarity = 0.323 moles / 3.40 L = 0.095 M (mol/L).

This is the concentration of the HCl solution in molarity.