Which of the following reactions is NOT an in | vedclass

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(A) An intermolecular redox reaction is one in which one element is oxidized and another element is reduced,typically involving different molecules or

Vedclass · Accepted Answer

$MgCO_3 	o MgO + CO_2$

Vedclass · Answer

(A) An intermolecular redox reaction is one in which one element is oxidized and another element is reduced,typically involving different molecules or atoms.$A)$ $MgCO_3 	o MgO + CO_2$: This is a thermal decomposition reaction. The oxidation states of $Mg$ $(+2)$,$C$ $(+4)$,and $O$ $(-2)$ remain unchanged. It is not a redox reaction.$B)$ $2H_2 + O_2 	o 2H_2O$: $H$ is oxidized $(0 	o +1)$ and $O$ is reduced $(0 	o -2)$. This is an intermolecular redox reaction.$C)$ $K + H_2O 	o KOH + 1/2H_2$: $K$ is oxidized $(0 	o +1)$ and $H$ is reduced $(+1 	o 0)$. This is an intermolecular redox reaction.$D)$ $MnBr_3 	o MnBr_2 + 1/2Br_2$: $Mn$ is reduced $(+3 	o +2)$ and $Br$ is oxidized $(-1 	o 0)$. This is an intramolecular redox reaction (where the same molecule undergoes both oxidation and reduction).Therefore,option $A$ is not a redox reaction at all,and option $D$ is an intramolecular redox reaction. Given the context of the question asking for 'not an intermolecular redox reaction',option $A$ is the most appropriate answer as it is not a redox reaction.

Which of the following reactions is $NOT$ an intermolecular redox reaction?

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