Molarity is most often used when the solute is a solid, and the solvent is a solid. True or false

false

Explanation:

Molarity refers to the amount of solute present in a solution. Molarity is usually expressed in the unit, moles per decimeter cubed or moles per litre. It can be used to estimate the concentration of a solution irrespective of whether the solute is solid, liquid or gas. It does not particularly apply to solid solutes.

Acid solutions which usually consists of liquid solutes are also expressed in molarity units as well as solid solutes.