In the reaction of Cl 2-2 KI -2 KCl - I 2 the conversion of 2I to I 2 is deemed as -OXIDATION - REDUCTION-

Oxidation is loss of electrons reduction is gain of electrons 2KI contains 2K+ and 2I ions 2I ==== gt;I2 +2e e represents electron which is present on ...

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Standard X

Chemistry

Redox Reaction

In the reacti...

Question

In the reaction of Cl₂ + 2KI -> 2KCl + I₂ the conversion of 2I to I₂ is deemed as _____ [OXIDATION / REDUCTION]

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Solution

Oxidation is loss of electrons
reduction is gain of electrons

2KI contains 2K+ and 2I- ions
2I- ====>I2 +2e-
e- represents electron which is present on the right side which indicates loss of electrons
so it is Oxidation.

Oxidation is also defined as increase in oxidation number
oxidation number of I on theleft side is 1- and that of I2 on the right side is 0. Thus we see an increase in oxidation number from -1 to 0.

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Q. Which reaction is this?

2 K I + C l_{2} \to 2 K C l + I_{2}

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C a O C l_{2} + H_{2} O ⟶ C a (O H)_{2} + C l_{2}

2 K I + C l_{2} ⟶ 2 K C l + I_{2}

I_{2} + 2 N a_{2} S_{2} O_{3} ⟶ N a_{2} S_{4} O_{6} + 2 N a I

Calculate moles of

N a_{2} S_{2} O_{3}

required for complete reduction of

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127

C a O C l_{2}

sample (

50 %

purity).

Q. Consider the reaction:

C l_{2} + 2 K I \to I_{2} + 2 K C l

Which species will be reduced at the cathode?

Q. For

I_{2} + 2 e^{-} \to 2 I^{-}, standard reduction potential = + 0.54 Volt .

For

2 B r^{-} \to B r_{2} + 2 e^{-}, standard oxidation potential = - 1.09 Volt .

For

F e \to F e^{2 +} + 2 e^{-}, standard oxidation potential = + 0.44 Volt .

Out of the below given reactions, how many reactions are spontaneous in nature (predict from the above data) ?

B r_{2} + 2 I^{-} \to 2 B r^{-} + I_{2}

F e + B r_{2} \to F e^{2 +} + 2 B r^{-}

F e + I_{2} \to F e^{2 +} + 2 I^{-}

I_{2} + 2 B r^{-} \to 2 I^{-} + B r_{2}

Q. Match the following

	Column-1		Column-2
A	Acidic reactions	p	${C l}_{2} + 2 K B r \to 2 K C l + {B r}_{2}$
B	Displacement reactions	q	$C a + {C l}_{2} \to {C a C l}_{2}$
C	Oxidising properties	r	${C l}_{2} + H_{2} O \to H O C l + H C l$
D	Addition reactions	s	$2 K I \to {C l}_{2} + 2 K C l + I_{2}$
E	Reaction with metals	t	${S O}_{2} + {C l}_{2} \to {S O}_{2} {C l}_{2}$

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In the reaction of Cl​​​​​2 + 2KI -> 2KCl + I​​​​​​2 the conversion of 2I to I​​​​​​2 is deemed as _____ [OXIDATION / REDUCTION]

In the reaction of Cl₂ + 2KI -> 2KCl + I₂ the conversion of 2I to I₂ is deemed as _____ [OXIDATION / REDUCTION]