Hard Chemistry Chapter 01: Solutions Class 12 Level 6

0.25 मोल प्रति लीटर ग्लूकोज विलयन के 200 मिलीलीटर में ग्लूकोज के मोल कितने होंगे?

How many moles of glucose are present in 200 mL of 0.25 mol L-1 glucose solution?

Explanation opens after your attempt
Correct Answer

B. 0.050 मोल / 0.050 mol

Step 1

Concept

Moles = molarity × volume in litres.

Step 2

Why this answer is correct

Volume 200 mL = 0.200 L. Moles = 0.25 × 0.200 = 0.050 mol.

Step 3

Exam Tip

A smaller volume does not contain moles equal to molarity, so multiplication by volume is essential. चरण 1: मोल = मोलरता × आयतन लीटर में। चरण 2: आयतन २०० मिलीलीटर = ०.२०० लीटर है। मोल = ०.२५ × ०.२०० = ०.०५० मोल। चरण 3: कम आयतन में मोलरता के बराबर मोल नहीं होते, इसलिए आयतन गुणा करना जरूरी है।

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