Question: Alum KAl(SO 4 ) 2 * xH 2 O is used in food preparation, dye fixation, and water purification. To prepare alum, aluminum is

Alum \ KAl(SO 4 ) 2 * xH 2 O\ 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 0.7096-g sample of alum is heated to drive off the waters of hydration, and the resulting KAl(SO 4 ) 2 weighs 0.3862 g. Determine the value of x, the number of water molecules in a formula unit of alum.

$Alum \ KAl(SO 4 ) 2 * xH 2 O\ is used$

Enter your answer in the provided box. Alum [KAl (SO4)2xH2O] 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 0.7096- g sample of alum is heated to drive off the waters of hydration, and the resulting KAl(SO4)2 weighs 0.3862g. Determine the value of x, the number of water molecules in a formula unit of alum. H2O molecules

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