Answer to Question #172410 in Organic Chemistry for Jeremy

Question

7. Hydrogen fuel cells:

a) Are recharged by plugging them into an electrical outlet.

b) are recharged by filling the cell up with fuel, similar to filling up a gas tank.

c) cannot be recharged.

d) are recharged by using electricity to reverse the chemical reactions that occurred in the cell.

8. The following substance(s) must be present for the corrosion of iron to occur.

a) oxygen and carbon dioxide

b) water and carbon dioxide

c) oxygen and water

d) oxygen

9. In the redox reaction of the corrosion of iron which substance is reduced?

a) iron

b) oxygen

c) iron(III) oxide

d) water

10. Generally which of the following factors decreases the rate of iron corrosion?

a) the presence of salt.

b) contact with a more reactive metal

c) acidic conditions

d) mechanical stress, such as bending

Answer 1

7. c)

8. d)

9. b)

10. b)