SATHEE: Redox Reactions And Electrochemistry Ques 549

Redox Reactions And Electrochemistry Ques 549

Question: In the balanced chemical reaction, $I O_{3}^{-} + a I^{-} + b H^{+} \to c H_{2} O + d I_{2}$ a, b, c and d respectively correspond to [AIIMS 2005]

Options:

A) 5, 6, 3, 3

B) 5, 3, 6, 3

C) 3, 5, 3, 6

D) 5, 6, 5, 5

Show Answer

Answer:

Correct Answer: A

Solution:

$I O_{3} - + a I^{-} + b H^{+} \to c H_{2} O + d I_{2}$

$S t e p 1 : I^{- 1} \to I_{2} (o x i d a t i o n)$ $I O_{3} - \to I_{2} (r e d u c t i o n)$

$S t e p 2 : 2 I O^{3 -} + 12 H + \to I_{2} + 6 H_{2} O$

$S t e p 3 : 2 I O 3 - + 12 H + + 10 e \to I 2 + 6 H_{2} O$ $2 I^{-} \to I_{2} + 2 e$

$S t e p 4 : 2 I O 3 - + 12 H + + 10 e - \to I 2 + 6 H_{2} O$ $[2 I^{-} \to I_{2} + 2 e] 5$

$S t e p 5 : 2 I O^{3 -} + 10 I^{-} + 12 H^{+} \to 6 I_{2} + 6 H_{2} O$

$I O^{3 -} + 5 I^{-} + 6 H^{+} \to 3 I_{2} + 3 H_{2} O$

On comparing, a = 5, b = 6, c = 3, d = 3

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Redox Reactions And Electrochemistry Ques 549

Question: In the balanced chemical reaction, IO3−+a I−+b H+→c H2O+d I2 a, b, c and d respectively correspond to [AIIMS 2005]

Options:

Answer:

Solution:

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Question: In the balanced chemical reaction, $I O_{3}^{-} + a I^{-} + b H^{+} \to c H_{2} O + d I_{2}$ a, b, c and d respectively correspond to [AIIMS 2005]