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It can be either, depending on the reaction. Sodium chloride is a product of the reaction of sodium hydroxide and hydrochloric acid. Sodium chloride is a reactant in the ion exchange reaction in a water softener to remove calcium from hard water.
Calcium hydroxide is used to test for carbon dioxide because the product of the reaction, calcium carbonate, is insoluble, and easily visible.
Can I answer with a question? How is calcium hydroxide formed? What is "lime water"
This depends on the reaction involved.
No.
It can be either, depending on the reaction. Sodium chloride is a product of the reaction of sodium hydroxide and hydrochloric acid. Sodium chloride is a reactant in the ion exchange reaction in a water softener to remove calcium from hard water.
It may be either a reactant or a product depending on what the reaction is. If you react elemental zinc with sulfuric acid to form zinc sulfate and hydrogen, then it is a product. If you react aqueous zinc sulfate with sodium hydroxide to form solid zinc hydroxide and sodium sulfate, then it is a reactant.
It may be either a reactant or a product depending on what the reaction is. If you react elemental zinc with sulfuric acid to form zinc sulfate and hydrogen, then it is a product. If you react aqueous zinc sulfate with sodium hydroxide to form solid zinc hydroxide and sodium sulfate, then it is a reactant.
calcium hydroxide is formed.
7.90E-6
Calcium Sulfide and water
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Calcium hydroxide is used to test for carbon dioxide because the product of the reaction, calcium carbonate, is insoluble, and easily visible.
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strong alkaline
Sugar can be both a reactant and a product.
The reactions of sodium hydroxide and calcium hydroxide with sulfuric acid will produce sodium sulfate and calcium sulfate respectively (water will be another product in both reactions. Sodium sulfate is soluble in water and so will remain in solution. Calcium sulfate, however, is insoluble and will precipitate as a solid.