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Chemistry Class 12
Solutions to CBSE Sample Paper - Chemistry Class 12

What is the predicted melting point if 1.2 g of salt is added to 10 mL of water? Justify your answer.



depression in freezing point is directly proportional to molality (mass of solute when the amount of solvent remains same)

0.3 g depression is 1.9 o C

0.6 g depression is 3.8 o C

1.2 g depression will be 3.8 x2 = 7.6 o C

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.