Question

osmolarity of a 1 m solution of ethanol c₂h₅oh is:
○ 3
○ 0
○ 1
○ 2

Explanation:

Step1: Recall Osmolarity Concept

Osmolarity (\(Osm/L\)) is the number of osmoles (particles that contribute to osmotic pressure) per liter of solution. For non - dissociating solutes (like ethanol, which is a covalent compound and does not dissociate in solution), the osmolarity is equal to the molarity.

Step2: Analyze Ethanol's Behavior

Ethanol (\(C_2H_5OH\)) is an alcohol and a non - electrolyte. When it dissolves in water, it does not dissociate into ions. So, 1 mole of ethanol dissolved in 1 liter of solution will produce 1 mole of solute particles (molecules of ethanol).

Step3: Calculate Osmolarity

Given the molarity of ethanol solution is 1 M. Since ethanol does not dissociate, the osmolarity (\(Osmolarity\)) is equal to the molarity. So, \(Osmolarity = 1\ Osm/L\).

Answer:

1 (corresponding to the option "1")