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0.46g of Ethanol is dissolved in 1000 g ...

0.46g of Ethanol is dissolved in 1000 g of `H_2O`. What is the molality of the ethanol solution ?

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Wt of ethanol (solute)=0.46 g
Wt. of water (solvent ) =1000 g
G.M. wt of ethanol =46 g
`therefore` molality =`(W/(G.M.W))_"solute"xx1000/"wt of solvent in gms"`
`=0.46/46xx1000/1000`=0.01 m
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AAKASH SERIES-SOLUTIONS -Objective Exercise -4
  1. 0.46g of Ethanol is dissolved in 1000 g of H2O. What is the molality o...

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  2. Assertion : Molarity of a solution decreases with an increase of tempe...

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  3. Assertion : Molality is independent of temperature Reason : There is...

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  4. Assertion : Mole fraction has no units Reason: Mole fraction is a r...

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  5. Assertion: Pressure does not have significant effect on solubility of ...

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  6. Assertion: Increase in temperature increases vapour pressure of a liq...

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  7. Assertion :Rate of evaporation increases with an increase in the surfa...

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  10. Assertion : Vapour pressure of 0.5M sugar solution is more than 0.5M K...

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  12. Assertion: If one component obeys Raoult's law over a certain range of...

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  13. Assertion: A solution is a homogeneous mixture of two or more chemical...

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  15. Assertion: One molal aqueous solution of urea con tains 60g of urea in...

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  16. Assertion: One molar aqueous solution (d=1gm/cc) has always higher con...

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  17. Assertion: The pressure exerted by the vapour of a liquid at equilibri...

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  18. Assertion: At the same temperature water has higher vapour pressure th...

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