Hard Chemistry Chapter 01: Solutions Class 12 Level 4

तापमान बदलने पर भी मोललता मोलरता की तुलना में अधिक भरोसेमंद क्यों मानी जाती है?

Why is molality considered more reliable than molarity when temperature changes?

Explanation opens after your attempt
Correct Answer

B. क्योंकि यह विलायक के द्रव्यमान पर आधारित है / Because it is based on mass of solvent

Step 1

Concept

Volume may change with temperature, but mass generally does not.

Step 2

Why this answer is correct

Molality is based on mass of solvent, so it remains more stable.

Step 3

Exam Tip

Prefer molality in temperature-related questions. चरण 1: तापमान बदलने पर आयतन बदल सकता है, पर द्रव्यमान सामान्यतः नहीं बदलता। चरण 2: मोललता विलायक के द्रव्यमान पर आधारित होती है, इसलिए अधिक स्थिर रहती है। चरण 3: तापमान से जुड़े प्रश्नों में मोललता को प्राथमिकता दें।

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The correct answer is B. क्योंकि यह विलायक के द्रव्यमान पर आधारित है / Because it is based on mass of solvent.

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