The total enthalpies of reactants and products are $H_R$ and $H_P$ respectively. For an exothermic reaction,which of the following is true?

  • A
    $H_R = H_P$
  • B
    $H_R < H_P$
  • C
    $H_R > H_P$
  • D
    $H_R - H_P = 0$

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