Hep with questions.. 3 and 4 please.. Thank you 2. In the following reaction ide

Question

Hep with questions..
3 and 4 please..
Thank you

2. In the following reaction identify the substance that is axidized and the substance that is reduced. Which metal is more active? More active 3. Why is it necessary to clean the surfaces of the metal samples before testing them in the metal on solutions? 4. You will not be testing the activity of sodium (Na or potassium (K) in this lab. Based on the periodic trends for activity, would you expect these metals to be more active or less active than the metals studied in this lab. Explain. Naci 2AgNo

Explanation / Answer

Ans 3.

The surfaces of metal samples may contain the coating of rust or corrosion or they might have presence of contaminants on them . These contaminants and coatings on the metal surfaces might interfere with the reaction of metal samples and ion solutions , hence giving inaccurate readings.

So the surfaces should be cleaned or polished so that the surfaces are free of unwanted foreign substances which might otherwise mess up with the experiment results.

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