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AP EAMCET2009ChemistryThermodynamics (C)

Calculate H^ for the reaction, Na ₂ O ( s )+ SO ₃( ~g ) Na ₂ SO ₄( ~g ) given the following :

Options

  1. A+823 kJ
  2. B–581 kJ
  3. C–435 kJ
  4. D+531 kJ

Correct answer

B. –581 kJ

Step-by-step solution

By ' 2 A+ C 2 -B ', we get aligned & Na ₂ O + SO ₃ Na ₂ SO ₄ & H=-2 146+ 259 2 -418 & or H=-580.5 -581 ~kJ aligned

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