H^{+} + Cr_2O_7^{2-} + SO_3^{2-} to Cr^{3+} + | vedclass

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

Question

(A) The unbalanced equation is: $H^{+} + Cr_2O_7^{2-} + SO_3^{2-} 	o Cr^{3+} + SO_4^{2-} + H_2O$. Step $1$: Identify oxidation and reduction half-rea

Vedclass · Accepted Answer

$8, 3$

Vedclass · Answer

(A) The unbalanced equation is: $H^{+} + Cr_2O_7^{2-} + SO_3^{2-} 	o Cr^{3+} + SO_4^{2-} + H_2O$. Step $1$: Identify oxidation and reduction half-reactions. Reduction: $Cr_2O_7^{2-} 	o Cr^{3+}$. Oxidation: $SO_3^{2-} 	o SO_4^{2-}$. Step $2$: Balance atoms and charges. Reduction half: $Cr_2O_7^{2-} + 14H^{+} + 6e^{-} 	o 2Cr^{3+} + 7H_2O$. Oxidation half: $SO_3^{2-} + H_2O 	o SO_4^{2-} + 2H^{+} + 2e^{-}$. Step $3$: Multiply oxidation half by $3$ to balance electrons: $3SO_3^{2-} + 3H_2O 	o 3SO_4^{2-} + 6H^{+} + 6e^{-}$. Step $4$: Add the two half-reactions: $Cr_2O_7^{2-} + 14H^{+} + 3SO_3^{2-} + 3H_2O 	o 2Cr^{3+} + 7H_2O + 3SO_4^{2-} + 6H^{+}$. Step $5$: Simplify: $Cr_2O_7^{2-} + 8H^{+} + 3SO_3^{2-} 	o 2Cr^{3+} + 3SO_4^{2-} + 4H_2O$. The coefficient of $H^{+}$ is $8$ and the coefficient of $SO_4^{2-}$ is $3$.

$H^{+} + Cr_2O_7^{2-} + SO_3^{2-} \to Cr^{3+} + SO_4^{2-} + H_2O$. In the balanced reaction,the coefficients of $H^{+}$ and $SO_4^{2-}$ will be respectively:

Similar Questions

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Ba(N_3)_2 \xrightarrow{\Delta} Ba + 3N_2 \uparrow$

What is the equivalent weight of $KMnO_4$ in acidic medium (in $g$)? (Molecular weight of $KMnO_4 = 158 \ g$)

What is the value of $n$-factor of $[Fe(CN)_6]^{-4}$ in the given reaction?
$[Fe(CN)_6]^{-4} \xrightarrow{MnO_4^-/H^{+}} Fe^{+3} + CO_2 + NO_3^-$

In the reaction $A^{-n_2} + x e^- \to A^{-n_1}$,the value of $x$ is:

Consider the following statements:
In the chemical reaction:
$MnO_2 + 4HCl \to MnCl_2 + 2H_2O + Cl_2$
$(1)$ Manganese ion is oxidised
$(2)$ Manganese ion is reduced
$(3)$ Chloride ion is oxidised
$(4)$ Chloride ion is reduced.
Which of these statements are correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module