Chemical Reaction HW_key(1) (1)

Chemical Reaction HW_key(1) (1) - ZnO 2 SO 2 e 2 N 2 3 H 2...

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Chemical Reaction HW 1. List three chemical changes that indicate a chemical reaction has occurred. Ppt forms. Gas evolves. Color change 2. Balance the following chemical equations a. 4 Na + O 2 2 Na 2 O b. C 2 H 4 + 3 O 2 2 CO 2 + 2 H 2 O c. 2 Fe + 3 H 2 O Fe 2 O 3 + 3 H 2 d. 2 ZnS + 3 O 2 2
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Unformatted text preview: ZnO + 2 SO 2 e. 2 N 2 + 3 H 2 2 NH 3 f. FeCrO 4 + 4 C Cr + Fe + 4 CO 3. Write and balance a chemical equation describing the following reactions: a. Aluminum metal is reacted with liquid bromine to form a precipitate of aluminum bromide. 2Al (s) + 3Br 2(l) 2AlBr 3(s) b. Powdered tetraiodine nonoxide is heated and it decomposed to form solid diiodine hexoxide, crystallized iodine, and oxygen gas. 2I 4 O 9(s) 2I 2 O 6(s) + 2I 2(s) + 3O 2(g)...
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