Which of the following changes involves the t | vedclass

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

Question

(A) To determine the number of electrons transferred,we calculate the change in the oxidation state of the central atom:$1$. In $MnO_4^{-}$,the oxidat

Vedclass · Accepted Answer

$MnO_4^{-} \longrightarrow Mn^{2+}$

Vedclass · Answer

(A) To determine the number of electrons transferred,we calculate the change in the oxidation state of the central atom:$1$. In $MnO_4^{-}$,the oxidation state of $Mn$ is $+7$. In $Mn^{2+}$,it is $+2$. The change is $7 - 2 = 5$ electrons.$2$. In $CrO_4^{2-}$,the oxidation state of $Cr$ is $+6$. In $Cr^{3+}$,it is $+3$. The change is $6 - 3 = 3$ electrons.$3$. In $NO_3^{-}$,the oxidation state of $N$ is $+5$. In $NH_4^{+}$,it is $-3$. The change is $5 - (-3) = 8$ electrons.$4$. In $Cr_2O_7^{2-}$,the oxidation state of $Cr$ is $+6$. In $2Cr^{3+}$,the total charge change for two $Cr$ atoms is $2 	imes (6 - 3) = 6$ electrons.Thus,the change involving the transfer of $5$ electrons is $MnO_4^{-} \longrightarrow Mn^{2+}$.

Which of the following changes involves the transfer of $5$ electrons?

Similar Questions

For the reaction $Ag_2O + H_2O + 2e^- \to 2Ag + 2OH^-$,which of the following is true?

Observe the following reaction:
$2 KClO_{3(s)} \xrightarrow{\Delta} 2 KCl_{(s)} + 3 O_{2(g)}$
In this reaction:

Explain redox reactions on the basis of electron transfer. Give suitable examples.

Identify the correct statement for the following reaction:
$3 \ Mg + N_2 \longrightarrow Mg_3N_2$

What is a reduction reaction? Give its examples.

Vedclass Test Series

Exam Paper Generator

Online Exam Module