Chemistry 121B HW Ch4a
(10 pts)
Due Wednesday, October 5, 2016
Name _____________________________________
Take a look at Sapling HW 4.1-4.2 Chemical Reactions and Equations, due Tuesday, October 4, 10:00 PM
Start in on the rest of the names on the Chemical Names and Formulas sheet. Consider practicing with
https://www.stolaf.edu/depts/chemistry/courses/toolkits/121/js/naming/ or
https://www.stolaf.edu/depts/chemistry/courses/toolkits/121/js/binko/index.html?compounds2
(5 pts) 1. Fill in the ions, compound name, or formula in each case:
name
formula
a.
ions
PbCl2
b.
ammonium carbonate
Ca2+
c.
d.
PO43–
H2SO4
e.
potassium permanganate
f.
Na2SO3
g.
gold(III) carbonate
h.
aluminum nitrite
(5 pts) 2. Balance each of the following equations:
a.
 ____ C2H2 + ____O2
____ CO + ____ H2O 
b
____ K

+ ____ H2O 
____ KOH +
____H2
____CO2 +
____H2O
c.

____ C2H5OH + ____O2 
d.

____P4O10 + ____H2O 
____H3PO4
e.

____As + ____NaOH 
____Na3AsO3

____C 
+ ____H2
f
____Ca3(PO4)2 + ____SiO2 +
g.
 ____KClO4 + ____Cr(ClO4)3 + ____I2 + ____H2O
____K2Cr2O7 + ____HI + ____HClO4 
h.
____CaSiO3 + ____ P4 + ____CO
 ____As2S5 + ____KOH + ____H2O
____K3AsO4 + ____H2S 
On this homework I worked with: ______________________________________________________________
Signature______________________________