Question

In the redox reaction

$2 \mathrm { MnO } _ { 4 } ^ { - } + 5 \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { 2 - } + 16 \mathrm { H } ^ { + }$⇌$2 \mathrm { Mn } ^ { 2 + } + 10 \mathrm { CO } _ { 2 } + 8 \mathrm { H } _ { 2 } \mathrm { O }$

The ion acting as autocatalyst is .

• A. $\mathrm { MnO } _ { 4 } ^ { - }$
• B. $\mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { 2 - }$
• C. $H ^ { + }$
• D. $\mathrm { Mn } ^ { 2 + }$

Answer 1

Answer: (D)

$\mathrm { Mn } ^ { 2 + }$

Answer 2

is a product in reaction so it is auto catalyst (according to definition).