SATHEE: Redox Reactions And Electrochemistry Ques 743

Redox Reactions And Electrochemistry Ques 743

Question: Which of the following are redox reactions-

Options:

A) $\frac{1}{2} H_{2} + \frac{1}{2} I_{2} + H I$

B) $P C l_{5} \to P C l_{3} + C l_{2}$

C) $2 C u S O_{4} + 4 K I \to C u_{2} I_{2} + 2 K_{2} S O_{4} + I_{2}$

D) $C a O C l_{2} \to C a^{+ 2} + O C l^{-} + C l^{-}$

Show Answer

Answer:

Correct Answer: A

Solution:

[a] $\frac{1}{2} {\overset{0}{H},}_{2}^{0} + \frac{1}{2} {\overset{0}{I},}_{2}^{0} \to \overset{+ 1 - 1}{H I},$ ….(i)

$\overset{+ 5}{P}, \overset{- 1}{C l_{5}}, \to \overset{+ 3}{P}, C l_{3} + C \overset{0}{I_{2}},$ …..(ii)

$2 \overset{+ 2}{C u}, S O_{4} + 4 \overset{+ 1 - 1}{K I}, \to {\overset{+ 1}{C u},}_{2} \overset{- 1}{I_{2}}, + 2 K_{2} S O_{4} + {\overset{0}{I},}_{2}$ …(iii)

$\overset{+ 2}{C a}, O {\overset{- 1}{C l},}_{2} \to C a^{2 +} + O C l^{-} + C l^{-}$ …..(iv)

Except (4), there occurs a change in O.S. of the reactants and products. Hence, except (4), all other are redox reactions.

Redox Reactions And Electrochemistry Ques 743

Question: Which of the following are redox reactions-

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

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Sample Mock Test

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Redox Reactions And Electrochemistry Ques 743

Question: Which of the following are redox reactions-

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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