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CHM 112
Section 1

Homework Assignment #28
Due April 21, 2006 by 8:05 a.m.

Practice (not to be turned in): Practice reactions 51 - 70, 18.26, 18.27, 18.28, 18.29, 18.30, 18.31, 18.87

Complete and balance the reactions corresponding to the last digit of your Student ID Number. This homework assignment will be worth 20 points.

0)

Cr(s) + HCl(aq) Cr3+(aq) + H2(g) + Cl(aq)

Mg(s) + O3(g) Mg(OH)2(s) + O2(g)


1)

HI(aq) + ClO3(aq) I3(aq) + Cl2(g)

Al(s) + ClO(aq) [Al(OH)4](aq) + Cl(aq)


2)

As2O3(s) + NO2(g) H3AsO4(aq) + NO(g)

Zn(s) + BrO(aq) [Zn(OH)4]2–(aq) + Br(aq)


3)

HBr(aq) + MnO2(s) Br2(l) + Mn2+(aq)

[Cr(OH)4](aq) + MnO4(aq) CrO42–(aq) + MnO2(s)


4)

H3AsO4(aq) + Al(s) AsH3(g) + Al3+(aq)

Co(OH)2(s) + ClO2(aq) Co(OH)3(s) + ClO(aq)


5)

HClO4(aq) + Fe2+(aq) ClO3(aq) + Fe3+(aq)

Ni(OH)3(s) + ClO2(aq) Ni(OH)2(s) + ClO3(aq)


6)

H2SO3(aq) + Ag(s) + Br(aq) AgBr(s) + S(s)

Co(OH)3(s) + NO2(aq) Co(OH)2(s) + NO3(aq)


7)

HNO3(aq) + Hg22+(aq) Hg2+(aq) + NO(g)

AgO(s) + Zn(s) Ag2O(s) + Zn(OH)2(s)


8)

NO2(g) + HCN(aq) C2N2(g) + HNO2(aq)

Ag2O(s) + Al(s) Ag(s) + Al(OH)3(s)


9)

H2S(aq) + BrO3(aq) BrO2(g) + S(s)

Mg(s) + ClO4(aq) Mg(OH)2(s) + ClO3(aq)



Turn in the following on a clean, full sheet of paper (not torn out of a notebook):

Name
Student ID Number
The answers to the question assigned. Show your work.