1. Does the rate of the reaction between aluminum and potassium hydroxide depend up on the size of aluminum pieces? Why? 2. When sulfuric acid is
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1. Does the rate of the reaction between aluminum and potassium hydroxide

depend up on the size of aluminum pieces? Why? 2. When sulfuric acid is added to the aluminum solution, a precipitate forms. What is the formula of the precipitate? And why does it dissolve? 3. A grater yield and larger alum crystals may be obtained by allowing the alum solution to cool in a refrigerator overnight or for a few days. Explain? 4. How can you quantitatively (experimentally) determine the moles of water of hydration in the alum crystals? Explain why the melting point of your alum must either equal or be less than the actual melting point of the alum?

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