how do you calculate the molaarity of a water solution of CaCl2, given that 5.04 L of the solution contains 612 g of CaCl2.
you still didnt answer the question tho smh
612 g/110.98 molar mass = 5.51
5.51/5.04
1.09 M
Well, let's dive into this question, shall we? To calculate the molarity of the water solution of CaCl2, we need to follow a few steps.
First, we need to determine the moles of CaCl2 present in the solution. To do that, we divide the given mass of CaCl2 (612 g) by its molar mass. The molar mass of CaCl2 is approximately 110.98 g/mol.
So, 612 g / 110.98 g/mol = approximately 5.51 mol of CaCl2.
Now, since we know the moles of CaCl2, the next step is to determine the molarity. Molarity is defined as the number of moles of solute (CaCl2) per liter of solution.
We're given that the solution contains 5.04 L, so now we divide the moles of CaCl2 (5.51 mol) by the volume of the solution (5.04 L).
5.51 mol / 5.04 L ≈ approximately 1.09 M.
And there you have it – the molarity of the water solution of CaCl2 is around 1.09 M. Hooray for math and chemistry jokes, right?
To calculate the molarity of a solution, you need to know the amount of solute (in moles) and the volume of the solution (in liters). In this case, you have been provided with the mass of CaCl2 (solute) and the volume of the solution. Here's how you can calculate the molarity:
Step 1: Convert the given mass of CaCl2 to moles.
To do this, you need to know the molar mass of CaCl2, which is the sum of the atomic masses of calcium (Ca) and chlorine (Cl). The atomic mass of Ca is 40.08 g/mol, and the atomic mass of Cl is 35.45 g/mol.
First, find the number of moles of CaCl2:
moles = mass / molar mass
moles = 612 g / (40.08 g/mol + 2 * 35.45 g/mol)
moles = 8.16 mol
Step 2: Calculate the molarity.
Molarity (M) is defined as moles of solute divided by liters of solution.
Molarity = moles / volume
You have been given the volume of the solution, which is 5.04 L.
Molarity = 8.16 mol / 5.04 L
Molarity ≈ 1.62 M
Therefore, the molarity of the water solution of CaCl2 is approximately 1.62 M.
Just a step or two.
molarity = moles/L.
So convert 612 g CaCl2 to moles. moles = grams/molar mass.
Then moles/L (L is 5.04) will get it.