Assign A,B,C,D from the given type of reactio | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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.
$K_2Cr_2O_7 \xrightarrow{\Delta } K_2CrO_4 + Cr_2O_3 + O_2 \uparrow$

Similar Questions

Balance the following redox reactions using the oxidation number and ion-electron method:
$(1) H_2S + Fe^{3+} \to Fe^{2+} + S + H^{+}$
$(2) Cu + NO_3^{-} \to Cu^{2+} + NO_2$
$(3) Sn + NO_3^{-} + H^{+} \to Sn^{2+} + NH_4^{+} + H_2O$
$(4) As + NO_3^{-} + H^{+} \to AsO_4^{3-} + NO_2 + H_2O$

$2MnO_4^{-} + 5H_2O_2 + 6H^{+} \to 2Z + 5O_2 + 8H_2O$. In this reaction $Z$ is

In the reaction $Zn + 2H^{+} + 2Cl^{-} \to Zn^{2+} + 2Cl^{-} + H_2$,the spectator ion is

Assign $A, B, C, D$ from the given type of reaction.
$H_3PO_2 + AgNO_3 \longrightarrow Ag + H_3PO_4 + HNO_3$ (Note: The reaction is balanced as $H_3PO_2 + 4AgNO_3 + 2H_2O \longrightarrow 4Ag + H_3PO_4 + 4HNO_3$)

$N_2H_4 + IO_3^- + 2H^+ + Cl^- \to ICl + N_2 + 3H_2O$
The equivalent masses of $N_2H_4$ and $KIO_3$ respectively are:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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