(Solution Download) Pre Lab Q.

A student determined percent of Cl in a sample of an unknown chloride gravimetrically by dissolving 0.63 grams of solid unknown in water, ading excess of AgNO3 and precipitating AgCl. He obtained 1.22 grams of AgCl. Using these data, calculate percent chloride in the unknown.


2a) What is the percent by weight of potassium in the ukown?


b) Using your answers to #1 and 2a, determine the empirical formula of the unknown chloride.


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