Commercially available conc. HCl contains 38% HCl by mass. What is the molarity of this solution? Density is 1.19g/cm3

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Solution

Dear student,

Mass of HCl = 38 gm and Mass of solution = 100 gm , now the volume of solution = 100 / 1.19 = 84 ml or 0.084 L
Number of moles of HCl = 38 / 36.5 = 1.04 moles
Molarity = n / V = 1.04 / 0.084 = 12.4 M
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