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2.7 gm of Al is heated with 100 mL of H...

2.7 gm of Al is heated with 100 mL of `H_(2)SO_(4)` (29.4% w/w density 1 gm/mL) following reaction takes place:
`Al+H_(2)SO_(4) rarr Al_(2)(SO_(4))_(3)+H_(2)`
The hydrogen gas obtained in the reaction is mixed with `1.2 xx 10^(24)` molecules of `O_(2)` . The molecular weight of gaseous mixture is :(Assuming gases are not reacting `N_(0)=6 xx 10^(23))`

A

29.9

B

30.6

C

17

D

None of these

Text Solution

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The correct Answer is:
A
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Balancce the equation , Al + H_(2)SO_(4) to Al_(2) (SO_(4) )_(3) + H_(2)

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Knowledge Check

  • 2.7 gm of Al is heated with 100 mL of H_(2)SO_(4) (29.4% w/w density 1 gm/mL) following reaction takes place: Al+H_(2)SO_(4) rarr Al_(2)(SO_(4))_(3)+H_(2) The volume of H_(2) gas evolved at 273 k and 1 atm:

    A
    3.36 L
    B
    2.24 L
    C
    4.48 L
    D
    11.2 L
  • In Alum: K_(2)SO_(4), Al_(2)(SO_(4))_(3). 24 H_(2)O Which metal can replace Al

    A
    Cr
    B
    Mn
    C
    In
    D
    Sc
  • The equivalent weight of H_(2)SO_(4) in the following reaction is Na_(2)Cr_(2)O_(7)+3SO_(2)+H_(2)SO_(4)rarr3Na_(2)SO_(4)+Cr_(2)(SO_(4))_(3)+H_(2)O

    A
    `98`
    B
    `(98)/(6)`
    C
    `(98)/(2)`
    D
    `(98)/(8)`
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