Question

You have a bottle of concentrated hydrochloric acid which is 96% w/v HCl. The molecular weight of HCl is 36.46 and its density is 1.18g.cm3 . What is the molarity of the HCl in the bottle. Give your answer to two significant figures.

Answer 1

Molarity is one way of expressing concentration in units of mole per liter solution. We calculate as follows:

.96 g / cm^3 ( 1 mol / 36.46 g ) ( 1000 cm^3/ 1 L) = 26.33 mol HCl /L solution

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