1. For test tubes 1-5, list the entities initially present. Also, identify the SOA and SRA and predict the spontaneity of the reaction. 

 

test tube 1: Iron placed in distilled water

Test tube 2: Iron is placed in hydrochloric acid

Test tube 3: Iron is placed in magnesium

Test tube 4: Iron is placed in saltwater

Test tube 5: Iron is placed in de-aerated water

Test tube 6: Iron alone (controlled)

 

2. Using the SOA and SRA identified in Question 17, write the oxidation and reduction half-reactions and the net reaction for systems 2 and 4.

 

3. Explain why there was accelarated corrosion in test tube 3

 

4. Explain why the nails did not corrode in test tubes 4 and 5.