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  • Given below are two statements: Statement I: In the coagulation of a negative solution, the flocculating power of the three given ions is in the order- <img al

Given below are two statements:
Statement I:
In the coagulation of a negative solution, the flocculating power of the three given ions is in the order-
\mathrm{Al}^{3}+>\mathrm{Ba}^{2}+>\mathrm{Na}^{+}
Statement II:
In the coagulation of a positive sol, the flocculating power of the three given salts is in the order-
\mathrm{NaCl}>\mathrm{Na}_{2} \mathrm{SO}_{4}>\mathrm{Na}_{3} \mathrm{PO}_{4}
In the light of the above statements, choose the most appropriate answer from the options given below:

Option: 1

Both Statement I and Statement II are incorrect.
 


Option: 2

Statement I is correct but Statement II is incorrect.
 


Option: 3

Statement I is incorrect but Statement II is correct.
 


Option: 4

Both Statement I and Statement II are correct.


Answers (1)

Hardly Schulze rule's say the greater the valence of the flocculating ion added, the greater is it's power to cause precipitation.

In the coagulation of a negative solution, the flocculating power is in the order :

\mathrm{Al}^{3+}>\mathrm{Ba}^{2+}>\mathrm{Na}^{+}

In the coagulation of a positive solution, the fluctuating power is in the order :

\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}>\mathrm{PO}_{4}^{3-}>\mathrm{SO}_{4}^{2-}>\mathrm{Cl}^{-}

So, a statement I is correct but statement II is incorrect.

Hence the correct option is 2.

Posted by

Ramraj Saini

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