Asked by JUNDY
                Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 70 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
            
            
        Answers
                    Answered by
            DrBob222
            
    First determine the molarity of the concentrated HCl.
That's
1.19 g/mL x 1000 mL x (38/100) x (1 mol/36.5 g) = ?M HCl
Then use the dilution formula of
mL1 x M1 = mL2 x M2
    
That's
1.19 g/mL x 1000 mL x (38/100) x (1 mol/36.5 g) = ?M HCl
Then use the dilution formula of
mL1 x M1 = mL2 x M2
                    Answered by
            Asrat Ayele
            
    1.734mol/l=M
    
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