Hard Chemistry Chapter 01: Solutions Class 12 Level 6

0.5 मोलल विलयन में 1 किलोग्राम जल के लिए ग्लूकोज का द्रव्यमान कितना होगा?

What mass of glucose is required for 1 kg water in a 0.5 molal solution?

Explanation opens after your attempt
Correct Answer

B. 90 ग्राम / 90 g

Step 1

Concept

0.5 molal means 0.5 mol solute in 1 kg water.

Step 2

Why this answer is correct

Molar mass of glucose is 180 g per mol. Mass = 0.5 × 180 = 90 g.

Step 3

Exam Tip

Molality is directly based on per kilogram of solvent. चरण 1: ०.५ मोलल का अर्थ है १ किलोग्राम जल में ०.५ मोल विलेय। चरण 2: ग्लूकोज का मोलर द्रव्यमान १८० ग्राम प्रति मोल है। द्रव्यमान = ०.५ × १८० = ९० ग्राम। चरण 3: मोललता सीधे प्रति किलोग्राम विलायक पर आधारित होती है।

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