Which of the following solution will show minimum osmotic effect? — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Osmotic pressure is a colligative property that strictly depends on the number of solute particles in the solution. In a colloidal gold sol, thousands of gold atoms aggregate to form a single colloidal particle. As a result, the number of effective particles per unit volume is extremely small compared to true ionic solutions, producing the minimum osmotic effect. Therefore, correct answer is B.