KMnO4 oxidises I- in acidic and neutral/faintly alkaline solution, respectively, to [2023]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

JEE MAIN
Class XI-XII
CHEMISTRY

Q.
${KMnO}_{4}$ oxidises $I^{-}$ in acidic and neutral/faintly alkaline solution, respectively, to [2023]

1 ${IO}_{3}^{-}$ and ${IO}_{3}^{-}$

2 $I_{2}$ and ${IO}_{3}^{-}$

3 $I_{2}$ and $I_{2}$

4 ${IO}_{3}^{-}$ and $I_{2}$

Ans.
(2)

In acidic medium

$2 {MnO}_{4}^{-} + 10 I^{-} + 16 H^{+} ⟶ 2 {Mn}^{2 +} + 8 H_{2} O + 5 I_{2}$

In neutral or faintly alkaline medium

$2 {MnO}_{4}^{-} + I^{-} + H_{2} O ⟶ 2 {MnO}_{2} + 2 {OH}^{-} + {IO}_{3}^{-}$

Solution

Q.
${KMnO}_{4}$ oxidises $I^{-}$ in acidic and neutral/faintly alkaline solution, respectively, to [2023]

1 ${IO}_{3}^{-}$ and ${IO}_{3}^{-}$

2 $I_{2}$ and ${IO}_{3}^{-}$

3 $I_{2}$ and $I_{2}$

4 ${IO}_{3}^{-}$ and $I_{2}$

Ans.
(2)

In acidic medium

$2 {MnO}_{4}^{-} + 10 I^{-} + 16 H^{+} ⟶ 2 {Mn}^{2 +} + 8 H_{2} O + 5 I_{2}$

In neutral or faintly alkaline medium

$2 {MnO}_{4}^{-} + I^{-} + H_{2} O ⟶ 2 {MnO}_{2} + 2 {OH}^{-} + {IO}_{3}^{-}$

Want Us to Email you About Special Offers & Updates?

Solution

Q. KMnO4 oxidises I- in acidic and neutral/faintly alkaline solution, respectively, to [2023]

1 IO3- and IO3-

2 I2 and IO3-

3 I2 and I2

4 IO3- and I2

Ans. (2) In acidic medium 2MnO4-+10I-+16H+⟶2Mn2++8H2O+5I2 In neutral or faintly alkaline medium 2MnO4-+I-+H2O⟶2MnO2+2OH-+IO3-

Want Us to Email you About Special Offers & Updates?

Q.
${KMnO}_{4}$ oxidises $I^{-}$ in acidic and neutral/faintly alkaline solution, respectively, to [2023]

1 ${IO}_{3}^{-}$ and ${IO}_{3}^{-}$

2 $I_{2}$ and ${IO}_{3}^{-}$

3 $I_{2}$ and $I_{2}$

4 ${IO}_{3}^{-}$ and $I_{2}$

Ans.
(2)

In acidic medium

$2 {MnO}_{4}^{-} + 10 I^{-} + 16 H^{+} ⟶ 2 {Mn}^{2 +} + 8 H_{2} O + 5 I_{2}$

In neutral or faintly alkaline medium

$2 {MnO}_{4}^{-} + I^{-} + H_{2} O ⟶ 2 {MnO}_{2} + 2 {OH}^{-} + {IO}_{3}^{-}$