Hard Chemistry Chapter 01: Solutions Class 12 Level 4

एक लीटर विलयन में शून्य दशमलव दो मोल विलेय है। यदि इसमें जल मिलाकर आयतन दो लीटर कर दिया जाए, तो नई मोलरता क्या होगी?

A 1 L solution contains 0.2 mole solute. If water is added to make the volume 2 L, what is the new molarity?

Explanation opens after your attempt
Correct Answer

A. 0.1 मोलर / 0.1 M

Step 1

Concept

During dilution, moles of solute remain the same.

Step 2

Why this answer is correct

New molarity = 0.2 mol ÷ 2 L = 0.1 M.

Step 3

Exam Tip

After dilution, use the final volume. चरण 1: पतला करने पर विलेय के मोल समान रहते हैं। चरण 2: नई मोलरता = शून्य दशमलव दो मोल ÷ दो लीटर = शून्य दशमलव एक मोलर। चरण 3: पतला करने के बाद अंतिम आयतन का प्रयोग करें।

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