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A solution of glycerol (C-(3)H(8)O(3) , ...

A solution of glycerol `(C-(3)H_(8)O_(3)` , molar mass = 92 g `mol^(-1)` iin water was prepared by dissolving some glycero 500 g of water. This solution has a boiling point of `100.42^(@)C`. What mass of glycerol was dissolved to make this solution ? `K_(b)` for water=` 0.512 k kg mol^(-1).`

Text Solution

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(b) `w_(2)=37.7g`
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A solution of glycerol (C_(3)H_(8)O_(3)) , molar mass ="92 g mol"^(-1) , in water was preapred by dissolving some glycerol in 500 g of water. This solution has a boiling point of 100.42^(@)C . What mass of glycerol was dissolved to make this solution? K_(b) for water ="0.512 K kg mol"^(-1) .

A solution of glycerol (C_(3)H_(8)O_(3)) with mlar mass =92 g mol^(-1) in water was prepared by dissolved some glycerol in 500 g of water. The solution had a boiling point of 100.42^(@)C . What mas of glycerol was dissolved to prepare this olution ( K_(2) for water = 0.512 K kg mol^(-1) ).

Knowledge Check

  • A solution of sucrose (molar mass =342 g mol^(-1) ) has been prepared by dissolving 68.5 g of sucrose in 100 g of water. The freezing point of the solution obtained will be (K_(f) "for water =1.86 K kg " mol^(-1)) :

    A
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    B
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    C
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  • A solution of sucrose (molar mass =342 g mol^(-1) ) has been prepared by dissolving 68.5 g of sucrose in 1000 g of water. The freezing point of the solution obtained will be ( K_(f) for water = 1.86K kg mol^(-1) )

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    B
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    D
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  • The molarity of urea (molar mass 60 g mol^(-1) ) solution by dissolving 15 g urea in 500 cm^(3) of water is

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    2 mol `dm^(-3)`
    B
    0.5 mol `dm^(-3)`
    C
    0.125 mol `dm^(-3)`
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    0.0005 mol `dm^(-3)`

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    (a) Explain the following : (i) Henry's law about dissolution of a gas in a liquid (ii) Boiling point elevation constant for a solvent (b) A solution of glycerol (C_(3)H_(8)O_(3)) in water was prepared by dissolving some glycerol in 500 g of water . This solution has a boiling point of 100.42 ^(@)C . what mass of glycerol was dissolved to make this solution ? ( K_(b) for water = 0.512 K kg mol^(-1) )

    A solution of glycerol (C_(3)H_(8)O_(3)) in water was prepared by dissolving some glycerol in 500g of water. This solution has a boiling point of 100.42^(@)C while pure water boils at 100^(@)C . What mass of glycerol was dissolved to make the solution ? ( K_(b) for water = 0.512 K kg mol^(-1) )

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