Chemistry Practice Problems Mass Percent Practice Problems Solution: 12.00 grams of acetic acid HC2H3O2 (Molar mass= 60...

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Solution: 12.00 grams of acetic acid HC2H3O2 (Molar mass= 60.00 g/mol) are dissolved in 188.0 grams of water. Density of solution is 1.12g/mL.a. What is the wt/wt % concentration of the solution? b. What is the molarity of this solution?  c. What is the molality of the solution?

Problem

12.00 grams of acetic acid HC2H3O2 (Molar mass= 60.00 g/mol) are dissolved in 188.0 grams of water. Density of solution is 1.12g/mL.

a. What is the wt/wt % concentration of the solution?

 

b. What is the molarity of this solution?

 

 

c. What is the molality of the solution?

Solution

Here we are given the mass of both the solute (acetic acid) and solvent (water) so we can easily get the wt/wt % or also called mass %. Remember that this is the mass of solute over the mass of solution times a hundred so we still have to find the mass of the solution. We can easily get the mass of the solution by adding the masses of the solute and solvent.

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