Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 13 PCB MCQ (Single Correct)

Given below are two statements:

Statement I: When dissolved in water, a coordination complex behaves as a single species, and its central ion with attached ligands does not dissociate further.
Statement II: Complex compounds may dissociate to give simple ions plus complex ions, but the complex ion remains intact.
In the light of the above statements, choose the most appropriate answer from the options given below:

A
Statement I is correct but Statement II is incorrect.
B
Statement I is incorrect but Statement II is correct.
C
Both Statement I and Statement II are correct.
D
Both Statement I and Statement II are incorrect.

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Text Solution

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The correct answer is:
C

In water, coordination compounds (e.g., dissociate into complex ions and counter ions:
.
The complex ion behaves as a single entity (inner-sphere ligands do not dissociate further), but the whole coordination compound does not behave as a single species because it ionizes into separate ions.

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