Which of the following is the water-gas shift reaction?

  • A
    $C_{(s)} + H_2O_{(g)} \xrightarrow{1270 \ K} CO_{(g)} + H_{2(g)}$
  • B
    $CH_{4(g)} + H_2O_{(g)} \xrightarrow{1270 \ K} CO_{(g)} + 3H_{2(g)}$
  • C
    $CO_{(g)} + H_2O_{(g)} \xrightarrow[\text{iron chromate}]{673 \ K} CO_{2(g)} + H_{2(g)}$
  • D
    $2H_2O_{(l)} \xrightarrow{\text{electrolysis}} 2H_{2(g)} + O_{2(g)}$

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