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0.24 gm of metal is dissolved completely...

0.24 gm of metal is dissolved completely in excess of dil. `H_(2)SO_(4)` solution. If 82.5ml dry hydrogen gas is liberated at `27^(@)C` and 95cm Hg. What is the equivalent weight of the metal ?

Text Solution

Verified by Experts

From ideal gas equation, `PV =nRT`
`( 95)/( 76) xx( 82)/( 1000) = ( w)/( 2) = 0.082 xx 300`
Weight of hydrogen gas liberated out, w `=8.38 xx 10^(-3) gm` hydrogen is liberated from 0.24 gm metal
`:. ` 1 gm hydrogen will be liberated from `( 0.24)/( 8.38 xx 10^(-3)) xx 1 `
`= 28.64 gm` Equivalent weight of metal = 28.64
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Knowledge Check

  • The metal which can not displace hydrogen from dil. H_(2)SO_(4) solution is

    A
    Zn
    B
    Al
    C
    Fe
    D
    Ag

  • Hydrogen gas is liberated when dil. H_2SO_4 react with

    A
    Cu
    B
    Fe
    C
    C
    D
    S

  • 1.82 g of a metal requires 32.5 ml of 1 N HCI to dissolve it . What is the equivalent weight of metal ?

    A
    46
    B
    65
    C
    56
    D
    42

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