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Potassium tetraiodomercurate (K2HgI4) is aqueous solution goes by several names, including Nesslers reagent and Mayers reagent....

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Chemistry

Potassium tetraiodomercurate (K2HgI4) is aqueous solution goesby several names, including Nesslers reagent and Mayers reagent. Itis an effective test for organic alkaloids and ammonia. A typicalbatch is made by dissolving 1.36 g of mercuric chloride and 5.00 gof potassium iodide in 20.0 mL of water. (a) Calculate the molalconcentration of K2HgI4 in the solution. (b) Calculate thecryoscopic constant for water. (c) This solution has a freezingpoint of 271.74K. Calculate the molality based on this observation.Explain what is happening.

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4.4 Ratings (832 Votes)
a Given the mass of HgCl2 136 gMoles of HgCl2 taken mass molar mass 136 g 27152 gmol 0005009 mol HgCl2Given the mass of KI 500 gMoles of KI taken mass molar mass 50 g 16600 gmol 003012 mol KIThe balanced    See Answer
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