29. The chemical equations below show the reaction of Al(OH)3 as a Lewis acid and as a...
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Question:
29. The chemical equations below show the reaction of Al(OH)3 as a Lewis acid and as a Lewis base, respectively.
Al(OH)3(s) + OH–(aq) Al(OH)4–(aq)
Al(OH)3(s) + 3 H3O+(aq) Al3+(aq) + 3 H2O( )
Substances that can behave as either Lewis acids or bases are called ________ substances.
Answer:
30. The following reaction occurs spontaneously.
2 H+(aq) + Ca(s) Ca2+(aq) + H2(g)
Write the balanced oxidation half-reaction.
a. 2 H+(aq) + 2 e– H2(g)
b. 2 H+(aq) H2(g) + 2 e–
c. H2(g) 2 H+(aq) + 2 e–
d. Ca(s) + 2 e– Ca2+(aq)
e. Ca(s) Ca2+(aq) + 2 e–
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