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Statement-1 : Molality of pure ethanol i...

Statement-1 : Molality of pure ethanol is lesser than pure water
Statement-2 : As density of ethanol is lesser than density of water
[Given : `d_("ethanol") = 0.789 gm//ml, d_("water") = 1gm//ml`]

A

Statement-1 is true, statement -2 is true and statement-2 is correct explanation for statement-1

B

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1

C

Statement-1 is false, statement-2 is true

D

Statement-1 is true, statement-2 is false

Text Solution

Verified by Experts

The correct Answer is:
B
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At a particular temperature vapour pressure of ethanol is more than that of water. Give reason.

Calculate the molarity of pure water. Given that density of pure wateris 1 g/mol.

Knowledge Check

  • Statement -1 : Density of ice is less than water. Statement-2 : Ice has open cage structure.

    A
    If both the statements are True and statement-2 is the correct explanation of statement-1
    B
    If both the statements are True and statement-2 is not the correct explanation of statement-1
    C
    If statement-1 is true and statement-2 is false
    D
    If statement-1 is false and statement-2 is true

  • Statement-1:Alkanes float on the surface of water Statement-2: Density of alkanes is in the range of 0.6-0.9 g/ml , which is lower than water.

    A
    Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
    B
    Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1
    C
    Statement-1 is True, Statement-2 is False.
    D
    Statement-1 is False, Statement-2 is True.

  • Molality of pure water if its density is 0.936gm//ml :

    A
    50
    B
    `55.56`
    C
    `57.56`
    D
    `56.56`

    • Similar Questions

    Explore conceptually related problems

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    The boiling point of an azeotropic mixture of water-ethanol is less than that of both water and ethanol. Then :-

    Molality of pure liquid ethanol (C_(2)H_(5)OH) if its density d=1.2g//ml is :

    Which of the following statement is true when ethanol dissolves in water.

    The total number of electrons present in 18ml of water ( density of water is 1g/ml)

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