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In the reaction. 2 Al _ ( s ) +6 HCl _ ( s ) 2 Al _ ( aq ) ³⁺+6 Cl _ ( aq ) ⁻+3 H _ 2( g ),

Options

  1. A6 ~L ~HCl _ ( aq ) is consumed for every 3 ~L ~H _ 2( g ) produced
  2. B33.6 ~L ~H _ 2( g ) is produced regardless of temperature and pressure for every mole Al that reacts
  3. C67.2 ~L~H _ 2( g ) at STP is produced for every mole Al that reacts
  4. D11.2 ~H _ 2( g ) at STP is produced for every mole HCl _ ( aq ) consumed

Correct answer

D. 11.2 ~H _ 2( g ) at STP is produced for every mole HCl _ ( aq ) consumed

Step-by-step solution

2 Al ( s )+6 HCl ( aq ) 2 Al ³⁺( aq )+6 Cl ⁻( aq )+3 H ₂( g ) For each mole of HCl reacted, 0.5 mole of H ₂ gas is formed at STP. 1 mole of an ideal gas occupies 22.4 lit at STP. Volume of H ₂ gas formed at STP per mole of HCl reacted is 22.4 0.5 litre. Hence, (D) is correct.

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