Expert Chemistry Chapter 01: Solutions Class 12 Level 4

यदि मोललता समान रखनी हो और विलायक का द्रव्यमान तीन गुना कर दिया जाए, तो विलेय के मोलों में क्या परिवर्तन चाहिए?

If molality is to be kept the same and mass of solvent is tripled, what change is needed in moles of solute?

Explanation opens after your attempt
Correct Answer

A. मोल तीन गुने करने होंगे / Moles must be tripled

Step 1

Concept

Molality = moles/kg solvent.

Step 2

Why this answer is correct

If the denominator becomes three times and value must stay same, moles must also become three times.

Step 3

Exam Tip

To keep molality constant, keep the solute-solvent ratio constant. चरण 1: मोललता = मोल/किलोग्राम विलायक। चरण 2: हर तीन गुना हो और मान समान रखना हो, तो ऊपर के मोल भी तीन गुना करने होंगे। चरण 3: मोललता को स्थिर रखने के लिए विलेय और विलायक का अनुपात स्थिर रखें।

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