InterviewSolution
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InterviewSolution
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Ferric hydroxide sol is positively charged colloid. The coagulating power of `NO_(3)^(-)` and `PO_(4)^(3-)` ions would be in the orderA. `NO_(3)^(-) gt SO_(4)^(2-) gt PO_(4)^(3-)`B. `SO_(4)^(2-) gt NO_(3)^(-) gt PO_(4)^(3-)`C. `PO_(4)^(3-)gtSO_(4)^(2-)gtNO_(3)^(-)`D. `NO_(3)^(-) = SO_(4)^(2-) = PO_(4)^(3-)` |
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Answer» Correct Answer - C According to Hardy-schulze rule the ions having opposite charge to sol particel cause coagulation and greater the valency of oppositely charged ion more is the coagulating power `(PO_(4)^(3-) gt SO_(4)^(2-) gt NO_(3)^(-))`. |
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