Hard Chemistry Chapter 01: Solutions Class 12 Level 5

एक मोलल जलीय विलयन में विलेय का मोल अंश लगभग कितना होगा यदि विलायक जल है?

What is the approximate mole fraction of solute in a 1 molal aqueous solution where the solvent is water?

Explanation opens after your attempt
Correct Answer

B. 0.0177 / 0.0177

Step 1

Concept

A 1 molal solution has 1 mol solute in 1 kg water.

Step 2

Why this answer is correct

Moles of water in 1 kg are about 55.5.

Step 3

Exam Tip

Mole fraction of solute is 1 divided by 56.5 which is about 0.0177. चरण 1: एक मोलल विलयन में एक किलोग्राम जल में एक मोल विलेय होता है। चरण 2: एक किलोग्राम जल के मोल लगभग पचपन दशमलव पाँच हैं। चरण 3: विलेय का मोल अंश एक बटे छप्पन दशमलव पाँच यानी लगभग शून्य दशमलव शून्य एक सात सात है।

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What is the correct answer to this Chemistry MCQ?

The correct answer is B. 0.0177 / 0.0177.

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