Estudiante Preparatoriano

Name ________________________________________________ Group __________
Date _________________________________________________ List # ___________
Chemistry II
1st Period
EQUATIONS FOR CHEMICALREACTIONS
1.- Circle the reactants in blue and the products in red.
a) 5C + 2SO2  CS2 + 4CO
b) N2H4 + 2 H2O2  N2 + 4 H2O
2.- Determine whether the following equations is balanced or notbalanced; explain.
a)2Al + 3Cl2  2AlCl3 ___________________________________
b)2NaOH + H2SO4  Na2SO4 + H2O ___________________________________
3.- Balance the following equations using the trialand error method:
a) CuCO3  CuO + CO2


b) Pb(NO3)2 + NaCl  PbCl2 + NaNO3


c) As4S6 + O2  As4O6 + SO2


4.- Write a chemical equation (not balanced)for each of the following:
a)Lithium metal reacts with liquid water to form hydrogen gas and aqueous lithium hydroxide

b)Liquid pentene(C5H10) burns with oxygen gas to form carbon dioxide gas andwater vapor

c) Hydrogen sulfide gas and solid iron(III)chloride react to form a precipitate of iron(III) sulfide and hydrogen chloride gas.

5.- Classify the following reactions as synthesis,decomposition, single replacement, double replacement, combustion, exothermic, endothermic
a)4Fe + 3O2  2Fe2O3 ___________________________________
b)Mg + 2AgNO3  Mg(NO3)2 + 2Ag___________________________________
c) CuCO3  CuO + CO2 ___________________________________
d)NaOH + HCl  NaCl + H2O ___________________________________
e)6CO2 + 6H2O + 2519 kJ  C6H12O6 + 6 O2_____________________________
f) CH4 + 2 O2  CO2 + 2 H2O + 890 Kj _____________________________
g) h)
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6.- Interpret the following equations in terms of particles andmoles:
a)2 Al + 3 Cl2  2 AlCl3
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b) 5 C + 2 SO2  CS2 + 4 CO...