The mass percentage of hydrochloric acid within a solution is 40.00%. Given that the density of...

The mass percentage of hydrochloric acid within a solution is 40.00%. Given that the density of this solution is 1.200 g/mL, find the molarity of the solution.

Expert Solution

Consider 100 g of solution.

40.00 % of HCl by mass means 40 g of HCl is present in 100 g of solution.

Volume of solution = Mass/Density

= 100/1.200

= 83.33 mL = 0.0833 L

No. of moles of HCl in solution = Mass/Molar Mass

= 40/36.5

= 1.096 moles

Molarity of solution = No. of moles of solute/Volume of solution in litres

= 1.096/0.0833

= 13.16 M

queen_honey_blossom answered 2 years ago

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