Which of the following reactions releases $57.3 \ kJ$ of heat per mole?

  • A
    $H^+ + Cl^- \to HCl$
  • B
    $H^+ + OH^- \to H_2O$
  • C
    $H_{2(g)} + 1/2O_{2(g)} \to H_2O_{(l)}$
  • D
    $Na^+ + Cl^- \to NaCl$

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