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Question

When an excess of AgNO3 is treated with KI solution, AgI will be produced. AgI will be:

A
Positive charged sol
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B
Negative charged sol
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C
Neutral sol
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D
True solution
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Solution

The correct option is A Positive charged sol
Since AgNO3 is in excess, Ag+ ions in the solution will also be present in excess. This gets absorbed on AgI, thus forming a positive charged sol.

AgNO3(excess)+KIAgI+AgNO3(remaining)−−−−−−−−−−−AgI/Ag+

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