Expert Chemistry Chapter 01: Solutions Class 12 Level 5

साठ प्रतिशत द्रव्यमान वाला अमोनिया जल विलयन है। अमोनिया का मोल अंश लगभग कितना होगा?

A 60 percent by mass aqueous ammonia solution is given. What is the approximate mole fraction of ammonia?

Explanation opens after your attempt
Correct Answer

C. 0.61 / 0.61

Step 1

Concept

In 100 g solution ammonia is 60 g and water is 40 g.

Step 2

Why this answer is correct

Moles of ammonia are 60 divided by 17 which is about 3.53 and moles of water are 40 divided by 18 which is about 2.22.

Step 3

Exam Tip

Mole fraction of ammonia is 3.53 divided by 5.75 which is about 0.61. चरण 1: सौ ग्राम विलयन में अमोनिया साठ ग्राम और जल चालीस ग्राम होगा। चरण 2: अमोनिया के मोल साठ बटे सत्रह यानी लगभग तीन दशमलव पाँच तीन और जल के मोल चालीस बटे अठारह यानी दो दशमलव दो दो हैं। चरण 3: अमोनिया का मोल अंश तीन दशमलव पाँच तीन बटे पाँच दशमलव सात पाँच यानी लगभग शून्य दशमलव छह एक है।

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