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The concentration of electrolyte require...

The concentration of electrolyte required to coagulate a given amount of `As_(2)S_(3)` sol is minimum in the case of

A

magnesium nitrate

B

potassium nitrate

C

potassium sulphate

D

aluminium nitrate

Text Solution

Verified by Experts

The correct Answer is:
D
According Hardy-Schulze rule, for the coagulation of a negative sol, the flocculating power of `K^(+),Mg^(+2) and Al^(+3)` ions is in order,
`Al^(+3) gt Ba^(+2) gt K^(+)`
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