The plot shows the variation of $- \ln K_p$ versus temperature for the two reactions:
$M_{(s)} + \frac{1}{2} O_{2(g)} \to MO_{(s)}$ and $C_{(s)} + \frac{1}{2} O_{2(g)} \to CO_{(g)}$
Identify the correct statement.

  • A
    At $T < 1200 \ K$,oxidation of carbon is unfavourable.
  • B
    Oxidation of carbon is favourable at all temperatures.
  • C
    At $T < 1200 \ K$,the reaction $MO_{(s)} + C_{(s)} \to M_{(s)} + CO_{(g)}$ is spontaneous.
  • D
    At $T > 1200 \ K$,carbon will reduce $MO_{(s)}$ to $M_{(s)}$.

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