In the chemical reaction- Cl2g-2KIaq- 2KClaq-I2sThe products can be tested by-

Explanation for the correct option:The given reaction is (Chlorine gas)⏟Cl_2(g)+(Potassium iodide)⏟2KI(aq)→(Potassium chloride)⏟2KCl(aq)+(Iodine)⏟I_2(s)Where th ...

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Byju's Answer

Standard IX

Chemistry

Reactivity Trends (Group 2)

In the chemic...

Question

In the chemical reaction:
$C l_{2} (g) + 2 K I (a q) \to 2 K C l (a q) + I_{2} (s)$
The products can be tested by:

$A g N O_{3} (a q)$

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Starch solution

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Litmus paper

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Both (a) and (b)

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Solution

The correct option is D
Both (a) and (b)

Explanation for the correct option:
The given reaction is $\underset{(C h l o r i n e g a s)}{\underset{⏟}{C l_{2} (g)}} + \underset{(P o t a s s i u m i o d i d e)}{\underset{⏟}{2 K I (a q)}} \to \underset{(P o t a s s i u m c h l o r i d e)}{\underset{⏟}{2 K C l (a q)}} + \underset{(I o d i n e)}{\underset{⏟}{I_{2} (s)}}$
Where the products are, Pottasium chloride and Iodine.
Silver nitrate could be used to test Pottasium chloride, reaction is written as follows:
$\underset{(S i l v e r n i t r a t e)}{\underset{⏟}{A g N O_{3} (a q)}} + \underset{(P o t a s s i u m c h l o r i d e)}{\underset{⏟}{K C l (a q)}} \to \underset{\underset{(W h i t e p r e c i p i t a t e)}{\underset{⏟}{(S i l v e r c h l o r i d e)}}}{\underset{⏟}{A g C l (s) ↓}} + \underset{(P o t a s s i u m n i t r a t e)}{\underset{⏟}{K N O_{3} (a q)}}$
A white precipitate of silver chloride is obtained.
Similarly, Silver nitrate is used to test Iodine also,
$\underset{(S i l v e r n i t r a t e)}{\underset{⏟}{A g N O_{3} (a q)}} + \underset{(I o d i n e)}{\underset{⏟}{I_{2} (s)}} + \underset{(W a t e r)}{\underset{⏟}{H_{2} O (l)}} \to \underset{\underset{(Y e l l o w)}{\underset{⏟}{(S i l v e r i o d i d e)}}}{\underset{⏟}{A g I (s) ↓}} + \underset{(S i l v e r i o d a t e)}{\underset{⏟}{A g I O_{3} (s)}} + \underset{(N i t r i c a c i d)}{\underset{⏟}{H N O_{3} (a q)}}$
The yellow color of Silver Iodide is obtained.
2. Starch test is also performed to test Potassium Iodide and Iodine,
$\underset{(P o t a s s i u m c h l o r i d e)}{\underset{⏟}{2 K C l (a q)}} + \underset{(I o d i n e)}{\underset{⏟}{I_{2} (s)}} \overset{W h e n t r e a t e d w i t h s t a r c h}{\to} B l u e b l a c k c o l o u r i s o b t a i n e d .$
Explanation for the incorrect option:
Option C is incorrect because the Litmus test is not used here, It is used to test acids and bases in aqueous solutions.
Option A is incorrect because Silver nitrate alone is not the correct option.
Option B is incorrect because option Starch alone is not the correct option.
Hence, option D is correct.

Suggest Corrections

In the chemical reaction: Cl2(g)+2KI(aq)→2KCl(aq)+I2(s)The products can be tested by:

In the chemical reaction:
$C l_{2} (g) + 2 K I (a q) \to 2 K C l (a q) + I_{2} (s)$
The products can be tested by: