Chem 1220 Test 3

26 flashcards · Other · by Elsa Schutfort

1. What occurs at the anode

   Oxidation

2. What occurs at the cathode?

   Reduction

3. For a spontaneous reaction under standard conditions, the sign of E° will be negative

   False

4. When a lead-acid battery is undergoing recharging, what lead-containing species are the reactant(s)?

   PbSO4

5. Why does road salt promote the rusting process on automobiles

   the salt allows maintenance of electrical neutrality at the cathode and anode reactions involved in the rusting process

6. What are the product(s) of the electrolysis of water?

   H2 and O2

7. In a hydrogen fuel cell, what is the reactant at the cathode?

   O2

8. 42He

   Alpha

9. 0-1e

   beta decay

10. 01e

    positron

11. 00y

    gamma

12. 10n

    neutron

13. less than 84, too high ratio of neutrons to protons __

    beta decay

14. less than 84, too low a ratio of neutrons to protons

    positron

15. The biological effect of radiation generally involves

    electron excitation upon striking an electron in an atom, resulting in the loss of the electron and production

16. Which isotope(s) of hydrogen is/are radioactive?

    tritium

17. What is the anhydride of carbonic acid?

    CO2

18. In an electrochemical cell, a salt bridge is required to

    provide a pathway for migration of spectator ions to maintain charge neutrality in the cathode and anode chambers

19. When a lead acid battery is being discharged, the reactant at the anode is __ and the cathode is__

    Pb, PbO2

20. Zinc protects iron against oxidation in a process called __ where zinc serves as a __

    cathodic protection, sacrificial anode

21. What is the main barrier to the development of nuclear fusion reactors?

    ) large amounts of radiation are generated in the process and ) temperatures in excess of 40,000,000K are required to initiate nuclear fusion

22. During an electrochemical reaction in a voltaic cell, electrons flow from the ___ to the ___

    anode , cathode

23. O3 is properly referred to as a(n) _____________ of the standard state form of oxygen.

    allotrope

24. Which of the following is a “carbide”?

    CaC2

25. What has the lowest boiling point? He, Ne, Ar, Xe, Rn

    He

26. What makes an element form pi bonds

    small and likes to form multiple bonds (in n=2)