* 00 3. Alum [KAI(SO4)2XH20] is used in food preparation, dye fixation, and water purification. To prepare alum, aluminum is reacted with potassium hydroxide and the product with sulfuric acid. Upon cooling, alum crystallizes from the solution. (a) A 0.6809-g sample of alum is heated to drive off the waters of hydration, and the resulting KAI(SO 2 weighs 0.3706 g. Determine the value of x and the complete formula of alum. SI Value of x: Complete Formula: (b) When 0.7557 g of aluminum is used, 8.460 g of alum forms. What is the percent yield? % yield tiy #3 4. 5. 7. n O

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".