CHM 1025C Module 5i Part E1 Sample Test Answers
Module 5i E1: Classification of Chemical Reactions Sample 10 Points
(Sections 7.4)
Classify Each of the
following (unbalanced) chemical reactions as:
___A___1. Fe
+ FeCl3 ---> FeCl2
__E__2. HCl +
Mg(OH)2 ---> MgCl2
+ HOH
___C__3. Mg +
HNO3 ---> Mg(NO3)2 +
H2
___A__4. H2 +
N2 ---> NH3
__F__5. NaHCO3 + HCl --->
NaCl
+ CO2 + H2O
__D__6. Ca(NO3)2 + K3PO4 ---> Ca3(PO4)2 + KNO3
__B__7. KClO3 ---> KCl +
O2
__C__8. Na + H2O ---> NaOH + H2
(See Questions #21-24 p215 for more practice)
Writing
Chemical Reactions (Section 7.2)
9.
Write a chemical equation for solid cadmium(II)
hydrogen carbonate decomposing to yield solid cadmium(II) carbonate, water, and
carbon dioxide gas:
Cd(HCO3)2
(s) ---> CdCO3 (s) +
H2O (l) + CO2 (g)
10.
Write a chemical equation for the reaction of aqueous solutions of potassium
chromate and calcium sulfate to give the precipitate calcium chromate and
aqueous potassium sulfate.
K2CrO4 (aq) + CaSO4
(aq) ---> CaCrO4 (s)
+ K2SO4 (aq)
See
additional question #7-17 p215