Calculating Molarity of Cu2Cl2 Dimer Solution

[debuchak]

Could you please help me out with this?

What would be the weight of 1 litre of a 1 Molar solution of Cu2Cl2?Cu2Cl2 is a dimer of CuCl right and some of it should dissociate to give the same right?
so will it be equal to that of
a)molecular weight of Cu2Cl2?
b)Molecular weight of CuCl?
c)or do we have to find the equilibrium conc of CuCl and Cu2Cl2 in the solution and take the average molecular weight?

 

[Borek]

If you have 1M solution of acetic acid you ususally don't bother with dissociation, you just assume it is 1M analytical (or formal) concentration. Same approach here - don't bother with what happens after dissolution. You need solution with 1M analytical concentration of Cu2Cl2.

What I don't get here is how are you going to find the mass of the solution without knowing its density. Or are you asking about how much substance you should take to prepare 1L of solution?

 

[Blueshift5]

To calculate the molarity of a solution of Cu2Cl2 dimer, you will need to know the molar mass of Cu2Cl2. This can be calculated by adding the atomic masses of copper (Cu) and chlorine (Cl) together, multiplied by 2 since there are two of each element in the dimer. This will give you the molecular weight of Cu2Cl2.

Once you have the molecular weight, you can use the formula for molarity, which is moles of solute divided by liters of solution. In this case, the solute is the Cu2Cl2 dimer and the volume is 1 liter. So to find the molarity, you will need to know the number of moles of Cu2Cl2 in 1 liter of solution.

Regarding the dissociation of the dimer, it is important to note that in a solution, some of the dimer will dissociate into CuCl monomers. However, for the purposes of calculating molarity, you can assume that all of the Cu2Cl2 remains in its dimer form. This is because the dissociation is a dynamic process and the concentration of the dimer will remain constant over time.

So to answer your question, the weight of 1 liter of a 1 Molar solution of Cu2Cl2 would be equal to the molecular weight of Cu2Cl2. You do not need to take into account the dissociation of the dimer or the equilibrium concentration of CuCl and Cu2Cl2 in the solution.