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4. The reaction of solid copper (II) oxide with hydrogen gas to form copper metal and
liquid water.
Type:
5. Calcium hydroxide solution and carbon dioxide gas yields solid calcium carbonate and
liquid water.
Type:
6. Solid calcium carbonate and a solution of sodium chloride are made when aqueous
calcium chloride and a solution of sodium carbonate react together.
Type:

Sagot :

Answer:

Explanation:

4. Reduction reaction as Cu++ is reduced to Cu.

5. Double displacement reaction as the CO3-- replaces 2x OH-

6. Precipitation as two solutions combine to form a precipitate and a secondary product.

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