Select the intramolecular redox reaction(s) among the following.

2 K C l O_{3} \to 2 K C l + 3 O_{2}

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(N H_{4})_{2} C r_{2} O_{7} \to N_{2} + C r_{2} O_{3} + 4 H_{2} O

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C l_{2} \to C l^{-} + {C l O_{3}}^{-}

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N H_{4} N O_{2} \to N_{2} + 2 H_{2} O

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Solution

The correct options are
A $2 K C l O_{3} \to 2 K C l + 3 O_{2}$
B $C l_{2} \to C l^{-} + {C l O_{3}}^{-}$
Intramolecular redox reactions are the reactions in which a single compound undergoes reduction-oxidation by the process of decomposition.
A) $(+ 5) 2 K C l_{3} ⟶ (- 1) 2 K C l + (0) 3 O_{2}$
C) $(0) C l_{2} ⟶ (- 1) C l^{-} + (+ 5) C l O_{3}^{-}$
Both reactions involves reduction-oxidation
Whereas,
B) $(+ 3) (N H_{4})_{2} (+ 6) C r_{2} O_{7} ⟶_{2} + (+ 3) C r_{2} O_{3} + 4 H_{2} O$
Here only reduction is seen.
D) $+ 5 N H_{4} + 3 N O_{2} ⟶_{2} + 2 H_{2} O$
Here also only reduction is seen.

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Similar questions

I : {({N H}_{4})}_{2} {C r}_{2} O_{7} ⟶ N_{2} + {C r}_{2} O_{3} + H_{2} O

I I : {N H}_{4} {N O}_{3} ⟶ N_{2} O + 2 H_{2} O

I I I : 2 K C l O_{3} ⟶ 2 K C l + 3 O_{2}

(N H_{4})_{2} C r_{2} O_{7} \to N_{2} + C r_{2} O_{3} + 4 H_{2} O

{(N H_{4})}_{2} C r_{2} O_{7} ⟶ N_{2} + C r_{2} O_{3} + 2 H_{2} O

(N H_{4})_{2} C r_{2} O_{7} \to N_{2} + C r_{2} O_{3} + 4 H_{2} O

(N H_{4})_{2} C r_{2} O_{7} \to N_{2} + C r_{2} O_{3} + 4 H_{2} O

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