A solution is formed by dissolving 83.2 grams of copper II chloride (CuCl2) in 2.5 liters of water. The molar mass of CuCl2 is 134.45 g/mol.
What is the molarity of the solution?
.25?
does that sound right??
To find the molarity of a solution, you need to know the number of moles of solute (in this case, copper II chloride) and the volume of the solution in liters. The formula to calculate molarity is:
Molarity (M) = Moles of solute / Volume of solution (in liters)
First, let's calculate the number of moles of copper II chloride present in the solution:
Number of moles = Mass of solute / Molar mass
Mass of CuCl2 = 83.2 grams
Molar mass of CuCl2 = 134.45 g/mol
Number of moles = 83.2 g / 134.45 g/mol
Now we need to convert the volume of the solution from milliliters to liters:
Volume of solution = 2.5 liters
Finally, we can calculate the molarity using the formula mentioned earlier:
Molarity (M) = Number of moles / Volume of solution
Molarity = (83.2 g / 134.45 g/mol) / 2.5 L
Now you can solve this equation to find the molarity of the solution.
mol CuCl2 = grams/molar mass = ?
M = molairity = mols/L solution = ? M