molality

American

[moh-lal-i-tee] / moʊˈlæl ɪ ti /

noun

Chemistry.

the number of moles of solute per kilogram of solvent.

molality British

/ mɒˈlælɪtɪ /

noun

(not in technical usage) a measure of concentration equal to the number of moles of solute in a thousand grams of solvent

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Inflected Forms

noun

molalities

plural

Etymology

Origin of molality

First recorded in 1920–25; molal + -ity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The molality of a solution is the number of moles of solute per kilogram of solvent.

From Textbooks • Jun. 9, 2022

Determine the molality of the solution from the number of moles of solute and the mass of solvent, in kilograms.

From Textbooks • Feb. 14, 2019

What is the molality of phosphoric acid, H3PO4, in a solution of 14.5 g of H3PO4 in 125 g of water?

From Textbooks • Feb. 14, 2019

Determine the molality of the ions in the solution from the number of moles of ions and the mass of solvent, in kilograms.

From Textbooks • Feb. 14, 2019

Finally, the molality of glucose in this solution is computed as:

From Textbooks • Feb. 14, 2019

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023