Name:
1. How does the term spectator apply to spectator ions?
2. How does a coefficient differ from a subscript?
For all question that ask you to write a balanced chemical equation, please remember that you will be unable to write in proper subscripts.
3. Write a balanced chemical equation for each of the following: (a) Aluminum reacts with oxygen to produce aluminum oxide.
(b) Phosphoric acid, H3PO4 is the product of a reaction between tetraphosphorus decoxide and water.
(c) Zinc sulfide reacts with oxygen gas to produce zinc oxide and sulfur dioxide gas.
(d) Iron(III) oxide reacts with magnesium to produce magnesium oxide and and iron
(e) Ammonium dichromate decomposes into nitrogen gas, chromium(III) oxide and water.
(f) Copper(II) sulfate reacts with ammonium sulfide to produce copper(II) sulfide and ammonium sulfate.
4. Predict the products, balance the equation and classify the following reactions as single displacement, double displacement, decomposition, or synthesis. (a) CuCl2 --> classification(s):
(b) Mg + O2 --> classification(s):
(c) Zn + Pb(NO3)2 --> classification(s):
(d) Calcium + Bromine --> classification:
(e) Silver(I) nitrate + hydrochloric acid --> classification(s):
5. Write the molecular, ionic and net ionic equations for the reaction between cadmium(II) chloride and sodium carbonate.
6. How can you identify a compound that is either an acid or a base?
7. What is meant by a neutralization reaction? Give an example.
Stoichiometry
1. Compare the limiting reactant and the excess reactant in a chemical reaction.
2. Compare the actual yield to the theoretical yield.
3. Why is it necessary to balance a chemical reaction in order to do stoichiometry calculations?
4. Use the balanced chemical equation below to show mole ratios for the situations that follow.
2H2(g) + O2(g) --> 2H2O(g)
a. mol of H2O produced from 2 mol of H2 b. mol of O2 required if 2 mol H2O are produced c. mol of H2 required if 1 mol of O2 reacts
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