Definition

A measure of the concentration of a solute in a solution, defined as the number of moles of solute per kilogram of solvent.

Example

The chemist calculated the molality of the solution to determine how much solute was present.

Conversation

Have you ever heard of molality in chemistry?

Yeah, it's about the concentration of a solute in a solvent, right?

Exactly! It's usually measured in moles per 1,000 grams of solvent.

I find it fascinating how precise these measurements can be.

Synonyms & Antonyms

Root Explanation

Molality is formed from "mola" (from Latin, meaning millstone or grind) and the suffix "-ity" (meaning quality or state). The term refers to the quality or state of a solution in terms of the number of moles of solute per kilogram of solvent, relating back to the grinding or mixing of substances.

Memory Tip

Think of 'mola' as relating to grinding or mixing substances together, which helps you remember that 'molality' refers to the quality of a solution based on how much solute is mixed in.

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