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(D) The given reaction is: $4K_2Cr_2O_7 \xrightarrow{\Delta } 4K_2CrO_4 + 2Cr_2O_3 + 3O_2 \uparrow$.In this reaction,the oxidation state of $Cr$ chang

Vedclass · Accepted Answer

$D$. for either thermal combination redox reaction or thermal decomposition redox reaction.

Vedclass · Answer

(D) The given reaction is: $4K_2Cr_2O_7 \xrightarrow{\Delta } 4K_2CrO_4 + 2Cr_2O_3 + 3O_2 \uparrow$.In this reaction,the oxidation state of $Cr$ changes from $+6$ in $K_2Cr_2O_7$ to $+6$ in $K_2CrO_4$ and $+3$ in $Cr_2O_3$.The oxidation state of $O$ changes from $-2$ in $K_2Cr_2O_7$ to $0$ in $O_2$.Since a single reactant $(K_2Cr_2O_7)$ decomposes upon heating into multiple products involving a change in oxidation states,it is a thermal decomposition redox reaction.Therefore,the correct classification is $D$.

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$K_2Cr_2O_7 \xrightarrow{\Delta } K_2CrO_4 + Cr_2O_3 + O_2 \uparrow$

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Assign $A$,$B$,$C$,$D$ from the given type of reaction.$K_2Cr_2O_7 \xrightarrow{\Delta } K_2CrO_4 + Cr_2O_3 + O_2 \uparrow$