Find out the value of x and the complete formula of alum

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Reference no: EM13268368

alum [KAL(SO4)2 times xH2O] 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.

1) A 0.6815g sample of alum is heated to drive off the waters of hydration, and the resulting KAL(SO4)2 weighs 0.3709 g. Determine the value of x AND the complete formula of alum.

2) when 0.7939g of aluminum is used, 8.570g of alum forms. what is the percent yield?

Reference no: EM13268368

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