Consider your data from Part C and answer the following questions: ·Circle each

Question

Consider your data from Part C and answer the following questions: ·Circle each compound that you would expect to be an electrolyte. Explain your choices. Did any of the compounds you carded in Part A test negative forC upon dissolution in water? If so, explain this result 5 c. Did the nonelectrolytes test positive or negative for C upon dissolution in water? Whyi? 6 Two students examined the sugar substitute Splenda (C1HIpCI,O,). One dissolved the sample into tap water and found that the solution turned cloudy upon addition of AgNO, The second dissolved the sample into distilled water and tound that the solution did not turn cloudy upon the addition of AgNO,. Provide an explanation for this discrepancy. CHAPTER 5 Matter and Solutions 301

Explanation / Answer

5. a. Electrolytes areKCl, KClO4,NH4Cl,CUCl2 and ClCH2COOH

Nonelectrolyte is C12H19Cl3O8  

b.  KClO4 and ClCH2COOH give the negative test for Cl- as these electrolytes do not give Cl- upon dissolution in water

c.  Nonelectrolyte C12H19Cl3O8 on dissolution in water, it does not dissociate and provide Cl-

6. sugar(C12H19Cl3O8 )on dissolution using tap water which has chloride that reacts with AgNO3 to form AgCl as cloudy whereas distilled water does not contain chloride so that the solution did not turn cloudy

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