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For which one of the following reaction,...

For which one of the following reaction,the graph of `Delta G` against T is almost horizontal to temperature axis
(А) `C_((s))` + `O_(2(g))` `rarr` `CO_(2(g))`
(В) `2C_((s))` + `O_(2(g))` `rarr` `2CO_((g))`
(с) `2CO_((s))` + `O_(2(g))` `rarr` 2`CO_(2(g))`
(D) `2Mg_((s))` + `O_(2(g))` `rarr` 2`MgO_((s))`

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