Inorganic Chemistry Alum from Aluminum Beverage Cans, chemistry homework help

1.)  If your product had not been dry, would the yield be higher or lower than the yield based on a dry product?  Explain your choice.

2.)  How many grams of alum can be obtained from 20.0 g of aluminum when the reaction proceeds with 100% yield?  how many grams of alum would be obtained if the reaction were to proceed with 80% yield?

3.)  How many grams of dry alum can be obtained from 20.0 g of aluminum when the reaction proceeds with 60% yield?  How many grams of wet alum would be obtained if the reaction were to proceed with 60% yield but for every four grams of alum obtained there is one gram of excess water isolated with it?

4.) How many grams of hydrogen are released by the reaction of 1.00 g of aluminum with excess potassium hydroxide solution assuming 100% yield?

5.)  How is it possible to obtain a yield greater than 100%?

6.)  Write the formula of “chrome” alum.  Hint:  It’s the one with a chromium ion in the place of the aluminum ion.

 

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