Indicate what type, or types, of reaction each of the following represents:
(a)
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Chemistry 2e · 4.2 Classifying Chemical Reactions
15 problems from the book, with its answers. Check your working, or have any of them explained to you on the whiteboard.
Exercises 13
Indicate what type, or types, of reaction each of the following represents:
(a)
Exercises 15
Exercises 17
Exercises 19
Exercises 21
Exercises 23
Exercises 25
Exercises 27
Exercises 29
Exercises 31
Exercises 33
Exercises 35
Exercises 37
Exercises 39
Exercises 41
The tutor teaches the whole section, drawing it out step by step and answering your questions as you go.
(b)
(c)
Silver can be separated from gold because silver dissolves in nitric acid while gold does not. Is the dissolution of silver in nitric acid an acid-base reaction or an oxidation-reduction reaction? Explain your answer.
Determine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or superoxides.
(a) H₃PO₄
(b) Al(OH)₃
(c) SeO₂
(d) KNO₂
(e) In₂S₃
(f) P₄O₆
Classify the following as acid-base reactions or oxidation-reduction reactions:
(a)
(b)
(c)
(d)
(e)
(f)
Complete and balance the following acid-base equations:
(a) HCl gas reacts with solid Ca(OH)₂(s).
(b) A solution of Sr(OH)₂ is added to a solution of HNO₃.
Complete and balance the following oxidation-reduction reactions, which give the highest possible oxidation state for the oxidized atoms.
(a)
(b) (single displacement)
(c)
(d) (products are a strong base and a diatomic gas)
Complete and balance the equations for the following acid-base neutralization reactions. If water is used as a solvent, write the reactants and products as aqueous ions. In some cases, there may be more than one correct answer, depending on the amounts of reactants used.
(a)
(b)
(c)
The military has experimented with lasers that produce very intense light when fluorine combines explosively with hydrogen. What is the balanced equation for this reaction?
Great Lakes Chemical Company produces bromine, Br₂, from bromide salts such as NaBr, in Arkansas brine by treating the brine with chlorine gas. Write a balanced equation for the reaction of NaBr with Cl₂.
Lithium hydroxide may be used to absorb carbon dioxide in enclosed environments, such as manned spacecraft and submarines. Write an equation for the reaction that involves 2 mol of LiOH per 1 mol of CO₂. (Hint: Water is one of the products.)
Complete and balance the equations of the following reactions, each of which could be used to remove hydrogen sulfide from natural gas:
(a)
(b)
Write balanced chemical equations for the reactions used to prepare each of the following compounds from the given starting material(s). In some cases, additional reactants may be required.
(a) solid ammonium nitrate from gaseous molecular nitrogen via a two-step process (first reduce the nitrogen to ammonia, then neutralize the ammonia with an appropriate acid)
(b) gaseous hydrogen bromide from liquid molecular bromine via a one-step redox reaction
(c) gaseous H₂S from solid Zn and S via a two-step process (first a redox reaction between the starting materials, then reaction of the product with a strong acid)
Complete and balance each of the following half-reactions (steps 2–5 in half-reaction method):
(a)
(b)
(c)
(d) (in acidic solution)
(e) (in basic solution)
(f) (in acidic solution)
(g) (in acidic solution)
(h) (in basic solution)
Balance each of the following equations according to the half-reaction method:
(a)
(b)
(c)
(d)
(e)
Balance each of the following equations according to the half-reaction method:
(a)
(b)
(c)