Question

what is the molarity of solution containing 325g of nacl dissolved in 750ml of solution ​

Answer 1

Answer:

4 M (molar)

Explanation:

Molarity= Mole   =  Mass X 1000

              Vol in lt.     M.Wt X Vol(ml)

 

             = 117 X 1000

                58.5 X 500

            = 4 molar or M

Answer 2

The molarity of the solution of NaCl is 7.4M.

We have to find the molarity of solution containing 325g of NaCl dissolved in 750ml of solution.

Molarity : It is the number of moles of solute per unit litre of solution.

i.e., Molarity = no of moles of solute/volume of solution in Litre.

Here, mass of NaCl = 325g

molecular mass of NaCl = 58.5 g/mol

∴ no of moles of NaCl = mass of NaCl/molecular mass of NaCl

= 325/58.5

= 5.55 moles

Now, Molarity = no of moles of NaCl/volume of solution

= 5.55 moles/(750/1000 L)

= 7.4M

Therefore the molarity of the solution is 7.4M.

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