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| 1. |
The addition of ferric hydroxide solution to arseneous sulphide solution results in the precipitation ofboth. |
| Answer» Solution :This is possible only in CASE equimolar solutions (solutions with same number of MOLES) are mixed. Since the ferric hydroxide sol carries positive CHARGE and arsenic oxide sol is negatively charged on MIXING they will get their charge neutralized and will be COAGULATED. | |