Chapter 8 On-line Quiz

Chem 20                                                      D. Oliver

Answer the questions below and then click "submit" to send your answers. Only the first submission of the quiz will count. Choose the most correct answer from the choices below.

  1. Determine the reaction type for the reaction: H2SO4 + BaCO3 --->BaSO4 + H2O + CO2

    2. Your answer:
    Double displacement with formation of a stable molecule.
    Double displacement with formation of a stable molecule and a gas.
    Double displacement with formation of a precipitate.
    Double displacement with formation of a gas.
    Double displacement with formation of a precipitate, and an unstable molecule which decomposes to a stable molecule and a gas.

  2. A very active metal plus water gives______________________.

    3. Your answer:
    a salt, water and hydrogen gas.
    a salt and water.
    a base and a salt.
    a base and hydrogen gas.
    an oxide and hydrogen gas.

  3. C6H12O6 will burn in oxygen to give __________.

    4. Your answer:
    CO2 and H2O.
    C, H, and O.
    H2CO3.
    nothing but energy.
    CO and HO.

  4. Al(ClO3)3 decomposes upon heating and gives____________________.

    5. Your answer:
    AlCl3 and O3
    Al, Cl2 and O2
    AlCl and O
    AlCl3 and O2
    AlCl2 and O2

  5. All chlorides are ________________________________________.

    6. Your answer:
    soluble except Ag+, Hg22+, Pb2+
    insoluble except group IA and ammonium.
    soluble except Pb2+, Ba2+, Sr2+, Ca2+, and Ag+
    insoluble except Ag+, Hg22+, Pb2+
    soluble except Ag+, Hg2+, Pb2+

  6. Balance the following equation. Zn + MgCl2 --->

    7. Your answer:
    2Zn + MgCl2 ---> 2ZnCl + Mg
    Zn + MgCl2 ---> ZnMgCl2
    Zn + MgCl2 ---> No reaction
    Zn + MgCl2 ---> ZnMg + Cl2
    Zn + MgCl2 ---> ZnCl2 + Mg

  7. Balance the following equation. Al + Sn(NO3)2 --->

    8. Your answer:
    Al+2 + Sn(NO3)2 ---> Al(NO3)2 + Sn+2
    Al + Sn(NO3)2 ---> Al(NO3)2 + Sn
    2Al+3 + 3Sn(NO3)2 ---> 2Al(NO3)3 + 3Sn+2
    2Al + 3Sn(NO3)2 ---> 2Al(NO3)3 + 3Sn
    Al + Sn(NO3)2 ---> Al(NO3)3 + Sn

  8. Balance the following equation. C3H6 + O2 --->

    9. Your answer:
    2C3H6 + 9O2 ---> 6CO2 + 6H2O
    C3H6 + 7/2O2 ---> 2CO2 + 6H2O
    2C3H6 + 9/2O2 ---> 6CO2 + 6H2O
    C3H6 + O2 ---> 2CO2 + 3H2O
    C3H6 + 7O2 ---> 2CO2 + 3H2O

  9. Balance the following equation. Al(NO3)3 + KCl --->

    10. Your answer:
    Al(NO3)3 + KCl ---> KAl + NO3Cl
    Al(NO3)3 + KCl ---> K(NO3)3 + AlCl
    Al(NO3)3 + 3KCl ---> AlCl3 + 3KNO3
    Al(NO3)3 + KCl ---> KN3O9 + AlCl
    Al(NO3)3 + KCl ---> No reaction.

  10. Balance the following equation. Iron(II) nitrate + potassium hydroxide --->

    11. Your answer:
    Fe(NO3)2 + 2KOH ---> No reaction
    Fe2NO3 + 2KOH ---> 2FeOH + 2KNO3
    Fe(NO3)2 + 2KOH ---> Fe(OH)2 + 2KNO3
    Fe2NO3 + 2KOH ---> Fe2(OH)2 + 2KNO3
    Fe(NO3)2 + 2KOH ---> Fe(OH)2 + K2(NO3)2

  11. Balance the following equation. Coper(II) nitrate + silver --->

    12. Your answer:
    Cu(NO3)2 + 2Ag ---> Cu + 2AgNO3
    Cu(NO3)2 + Ag ---> No reaction
    Cu2NO3 + Ag ---> Cu2 + AgNO3
    Cu2(NO3)2 + 2Ag ---> Cu2 + 2AgNO3
    Cu(NO3)2 + Ag ---> Cu + Ag(NO3)2

  12. Balance the following equation. Chromium(III) Carbonate + sulfurous acid --->

    13. Your answer:
    Cr2(CO3)3 + H2SO4 ---> Cr2(SO4)2 + H2O + 3CO2
    Cr3(CO3)2 + 2H2SO3 ---> Cr3(SO3)2 + 2H2O + 2CO2
    Cr2(CO3)3 + 3H2SO3 ---> Cr2(SO3)3 + 3H2O + 3CO2
    Cr2(CO3)3 + 3H2SO4 ---> Cr2(SO4)3 + 3H2O + 3CO2
    Cr2(CO3)3 + 2H2SO3 ---> Cr2(SO3)2 + 2H2CO3

  13. In exothermic reactions, ___________________________________________.

    14. Your answer:
    the reactants are of higher energy than the products and energy is released.
    the reactants are of higher energy than the products and the activation energy is less than the energy released.
    the reactants are of higher energy than the products and the activation energy is less than the energy released.
    the reactants are of lower energy than the products and the activation energy is less than the energy released.
    the reactants are of lower energy than the products and the activation energy is greater than the energy released.

  14. In endothermic reactions, __________________________________________.

    15. Your answer:
    The reactants are of lower energy than the products and energy is released.
    The reactants are of lower energy than the products and the activation energy is less than the energy is absorbed.
    The reactants are of lower energy than the products and the activation energy is less than the energy is released.
    The reactants are of lower energy than the products and the activation energy is less than the energy is absorbed.
    The reactants are of lower energy than the products and energy is absorbed.

  15. One mole of CH4 burns and releases 890kJ of energy. How much energy is released when 10 moles of water are produced in the combustion of CH4? Hint: Balance the equation first.

    16. Your answer:
    4450 kJ
    None of the above
    445 kJ
    890 kJ
    8900 kJ

Name: 

Full email address: 

Class: 

NOTE TO THE STUDENT: If the answers are sent successfully, you will see another page come up in the web browser. If you don't see this page, it is possible that an error occurred during transfer and you should either resubmit your answers or notify your instructor.

Generated by QuizMaker 2.0.

QuizMaker 2.0 for QuizCenter authored by Ritchard Shadian. © 1996-98 University of Hawaii. Developed for the University of Hawaii Office of Technology Transfer and Economic Development in cooperation with Maui Community College. All rights reserved. Any copying, distribution, or preparation of derivative works is strictly prohibited.