# The commercial concentrated hydrochloric acid is rated at 38 w/w%. The density of the solution is...

## Question:

The commercial concentrated hydrochloric acid is rated at 38 w/w%. The density of the solution is 1.18 g/mL. Calculate the molarity of HCl, the molality of HCl, and the mole fraction of HCl.

## Concentration

The concentration in terms of molarity (M) is defined as the moles of a substance present in 1 L of the solution and the molality (m) is defined as the moles of the substance present in 1 kg of the solvent.

## Answer and Explanation: 1

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We are given 38 w/w% solution of hydrochloric acid that means 38 g of HCl present in 100 g of solution.

- Mass of HCl = {eq}36\ g {/eq}

- Mass of...

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Chapter 8 / Lesson 4What is molarity? What is molality? Compare molarity vs molality by viewing molality and molarity formulas, how to calculate molarity and molality, and examples.

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