Problem: HCl density 1.19 g/cm3 and 37% solute by mass. Calculate the molality. Please explain step by step.

FREE Expert Solution

We’re being asked to calculate for the molality of a 37% by mass HCl solution. 

When calculating for molality, we use the following equation:


We will calculate the molality of the solution using the following steps:

Step 1: Calculate the mass and moles of solute

Step 2: Calculate the mass of the solvent (in kg).

Step 3: Calculate the molality of the solution.


Solute → HCl

Solvent → water (H2O)

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Problem Details

HCl density 1.19 g/cm3 and 37% solute by mass. Calculate the molality. Please explain step by step.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Molality concept. You can view video lessons to learn Molality Or if you need more Molality practice, you can also practice Molality practice problems .

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Based on our data, we think this problem is relevant for Professor Sloan's class at Durham Technical Community College.