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NEET2008ChemistryThermodynamics (C)Actual

Standard free energies of formation (in kJ / mol ) at 298 ~K are -237.2,-394.4 and -8.2 for H ₂ O ( l ), CO ₂( ~g ) and pentane ( g ) respectively. The value of E _ cell ^ for the pentaneoxygen fuel cell is

Options

  1. A0.0968 ~V
  2. B1.968 ~V
  3. C2.0968 ~V
  4. D1.0968 ~V

Correct answer

D. 1.0968 ~V

Step-by-step solution

After calculation G ^ , use the formula, G ^ =-n F E^ Here, n=32 is taken because balanced equation is C ₅ H ₁₂+8 O ₂ 5 CO ₂+6 H ₂ O

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