Chemistry, asked by NAaditya111, 1 year ago

The volume of hydrogen gas evolved at STP when 0.9g of Al is dissolved in excess of dilute H2SO4

Answers

Answered by soniatiwari214
0

Answer:

To calculate the volume of hydrogen gas evolved,

  • Mass of Aluminium = 0.9g
  • Equivalent weight of Al = 27/3 = 9g
  • No. of equivalent of Al dissolved = 0.9/9 = 0.1eq
  • No. of equivalent of H2 evolved = 0.1eq
  • Mass of H2 evolved = 0.1 ×1 = 0.1 [1 is the equivalent weight of H2]
  • No. of moles of H2 evolved = 0.1/2 = 1/20 moles
  • Molar volume at STP = 22.4L
  • Volume of H2 evolved = 22.4 × 1/20 = 1.12L

Hence, 1.12L of H2 gas is evolved.

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