Calculate the molar concentration of a 36% hydrochloric acid solution with a density of 1.2 g / ml.

First, we calculate the molecular weight of the chloride acid, resulting in 36.5 g / mol. Substitute the resulting value into the formula for converting the mass fraction to molar concentration. Please note that the mass fraction is substituted in the formula as a percentage. As a result of the calculation, we get the answer: the molar concentration of 36% chloride acid is 11.84 mol / l.