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Arsenic (III) sulphide forms a sol with ...

Arsenic (III) sulphide forms a sol with a negative charge.
Which of the following ionic substances should be most effective in coagulating the sol?

A

`KCl`

B

`MgCl_(2)`

C

`Al_(2)(SO_(4))_(3)`

D

`Na_(3)PO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`As_(2)S_(3)` sol is a negatively charged colloid. `Al^(3+)` has greater charge, therefore, `Al_(2)(SO)_(4)` is most effective in the coagulation of `As_(2)S_(3)` sol.
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CENGAGE CHEMISTRY-SURFACE CHEMISTRY-Exercises Single Correct
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  3. Arsenic (III) sulphide forms a sol with a negative charge. Which of ...

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  4. Aluminium hydroxide forms a positively charged sol. Which of the fo...

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  10. The diameter of collodal particle is of the order

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