Calculate the entropy change in $JK^{-1}$ for the reversible expansion of $5 \ mol$ of an ideal gas at $27 \ ^oC$ from $8 \ dm^3$ to $80 \ dm^3$.

  • A
    $79.87$
  • B
    $83.86$
  • C
    $91.79$
  • D
    $95.73$

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