Sample Lab Questions Investigation #4: "Chemical Economics"

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1.

(1pt) Write the balanced reaction for the dehydration of Epsom salts (MgSO₄7H₂O) to magnesium sulfate monohydrate.

2.

(1pt) A student obtains a yield greater than 100% in converting Epsom salt (MgSO₄7H₂O) to MgSO₄H₂O. How could you explain this discrepancy?

3.

(3pts) What mass of MgSO₄H₂O would be obtained by heating 20.6 g of MgSO₄7H₂O if the percent yield were 88.6%?

Answers

3. 10.2 g MgSO₄H₂O

To report any corrections, please e-mail Dr. Wendy Keeney-Kennicutt.