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molal

American

[moh-luhl] / ˈmoʊ ləl /

adjective

Chemistry.

noting or pertaining to a solution containing one mole of solute per kilogram of solvent.

molal British

/ ˈməʊləl /

adjective

chem of or consisting of a solution containing one mole of solute per 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

Etymology

Origin of molal

First recorded in 1905–10; mole ⁴ + -al ¹

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.

Use the direct proportionality between the change in boiling point and molal concentration to determine how much the boiling point changes.

From Textbooks • Feb. 14, 2019

The increase in boiling point observed when nonvolatile solute is dissolved in a solvent, ΔTb, is called boiling point elevation and is directly proportional to the molal concentration of solute species:

From Textbooks • Feb. 14, 2019

The provided molal concentration may be written as:

From Textbooks • Feb. 14, 2019

Determine the number of moles of compound in the solution from the molal concentration and the mass of solvent used to make the solution.

From Textbooks • Feb. 14, 2019

The molal solution is assumed to contain one molecular weight in grams in a liter of solution.

From An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes by Talbot, Henry P.

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