Stoichiometry

Q1: Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

A same elevation in boiling point.

B different elevation in boiling point.

C elevation in boiling point in the ratio of their molecular weights.

D none of these.

ANS:A - same elevation in boiling point.

The elevation in boiling point of a solution depends on the concentration of solute particles in the solvent, not on the specific identity of the solute molecules themselves. Therefore, when equimolar amounts of different solutes are dissolved in the same amount of a given solvent, the resulting solutions will have the same elevation in boiling point. This phenomenon is a colligative property, meaning it depends only on the number of solute particles, not their identity. Since equimolar amounts of different solutes will yield the same number of solute particles when dissolved in the same amount of solvent, the elevation in boiling point will be the same for all these solutions. Therefore, the correct answer is: same elevation in boiling point. he phenomenon of "same elevation in boiling point" is a consequence of colligative properties, specifically boiling point elevation. When a non-volatile solute, such as a salt or sugar, is dissolved in a solvent, it raises the boiling point of the solvent compared to its pure state. This effect occurs because the presence of solute particles lowers the vapor pressure of the solution, which in turn requires a higher temperature to reach the same vapor pressure as the pure solvent. The key concept here is that boiling point elevation is a colligative property, meaning it depends solely on the number of solute particles present in the solution, not on the identity of the solute particles themselves. This principle is outlined by Raoult's Law for ideal solutions. Now, when equimolar amounts of different solutes are dissolved in the same amount of a given solvent, they each contribute an equal number of solute particles per unit volume of solution. Since boiling point elevation is determined by the total number of solute particles, the resulting elevation in boiling point will be the same for all solutions. In simpler terms, if you dissolve the same number of particles of different solutes in a given amount of solvent, the resulting solutions will exhibit the same increase in boiling point because they have the same concentration of solute particles. This principle has important applications in various fields such as chemistry, biochemistry, and food science, where understanding the behavior of solutions is crucial for processes like cooking, purification techniques, and pharmaceutical formulations.

 



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.