6. Why do we need to precipitate from a hot solution? 7. Why is the precipitating agent added all at once?

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Chapter18: Electrochemistry
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Problem 4RQ: Consider the equation G = -nF. What are the four terms in this equation? Why does a minus sign...
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6. Why do we need to precipitate from a hot solution? 7. Why is the precipitating agent added all at once? 8. What is the purpose of adding 6M HCI in the sample solution? 9. Why do we need to test the washings with AgNO3? 10. What is done in an ignition process? 11. What is the product after the precipitate was ignited? 12. What are the advantages of performing ignition? 13. Cite the sources of errors for this experiment and explain how to possibly circumvent these kinds of problems.
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