NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Hard

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Analyzing +4 | -1

Assertion :

{\text{FeC}}{{\text{l}}_3}

does not affect iodometric titration of

{\text{CuS}}{{\text{O}}_{\text{4}}}

Solution

Reason :

{\text{FeC}}{{\text{l}}_3}

is formed.

View answer and explanation

Correct option: D

If both Assertion & Reason are false.

Option D (If both Assertion & Reason are false) is correct because

{\text{FeC}}{{\text{l}}_3}

*does* affect the iodometric titration of

{\text{CuS}}{{\text{O}}_{\text{4}}}

solution, and the reason is incomplete.

{\text{FeC}}{{\text{l}}_3}

can oxidize

I^-

I_2

, interfering with the titration.

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