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Q.
The weight of glucose dissolved in 100gm of water produce same lowering of vapour pressure as 1gm urea dissolved in 50gm of water at same temperature is
NTA AbhyasNTA Abhyas 2022
Solution:
Since same lowering in vapour pressure. Mole fractions of solutes should be equal. Xurea =Xglucose 160160+5018=w180w180+10018 ⇒1605018=w18010018
For dilute solution
⇒w=6 gm of glucose