In the reduction of dichromate by $Fe(II)$,the number of electrons involved per chromium atom is:
- A$2$
- B$3$
- C$4$
- D$1$
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Similar Questions
Calculate the value of $n$ in the given reaction:
$MnO_4^{-} + 8H^{+} + n e^{-} \to Mn^{+2} + 4H_2O$
$MnO_4^{-} + 8H^{+} + n e^{-} \to Mn^{+2} + 4H_2O$
Easy
View SolutionAssign $A, B, C, D$ from the given type of reaction for the following chemical equation:
$Fe_{(s)} + 2HCl_{(aq)} \longrightarrow FeCl_{2(aq)} + H_{2(g)}$
$Fe_{(s)} + 2HCl_{(aq)} \longrightarrow FeCl_{2(aq)} + H_{2(g)}$
Medium
View SolutionComplete the following reactions:
$(a) \ Cr_2O_7^{2-} + X \to 2CrO_4^{2-} + H_2O$
$(b) \ Cr_2O_7^{2-} + 14H^+ + X \to 2Cr^{3+} + 7H_2O$
$(c) \ 6I^- \to X + 6e^-$
$(a) \ Cr_2O_7^{2-} + X \to 2CrO_4^{2-} + H_2O$
$(b) \ Cr_2O_7^{2-} + 14H^+ + X \to 2Cr^{3+} + 7H_2O$
$(c) \ 6I^- \to X + 6e^-$
Difficult
View SolutionIn the reaction
$x BrO_3^- + y Cr^{3+} + z H_2O \to Br_2 + CrO_4^{2-} + H^{+}$
the coefficients $x, y, z$ are
$x BrO_3^- + y Cr^{3+} + z H_2O \to Br_2 + CrO_4^{2-} + H^{+}$
the coefficients $x, y, z$ are
Medium
View SolutionIn balancing the half-reaction $S_2O_3^{2-} \to S_{(s)}$,the number of electrons that must be added is:
Difficult
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