CBSE Chemistry Question: How Do Acids and Bases React With Metals?

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Acid Meaning: The word acid is derived from the Latin word with the meaning sour. Some fruits (Lemon, orange) have a sour taste, which are mild acids.

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There are two types of acids. Organic Acid: Derived from plants. Example: Citric acid

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Inorganic Acids: Derived from minerals. Examples: Sulphuric acid, hydrochloric acid

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Metallic oxides and metallic hydroxides together make an important group called bases.

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Bases are sour to taste. All bases are not soluble in water. Soluble bases are called alkalis. Example: Copper oxide is a base, and Sodium hydroxide is an alkali.

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Acids react with most of the metals to liberate hydrogen.

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Most reactive elements like sodium and potassium react explosively with dilute acids.

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Calcium, magnesium, Al, Zn, and Fe react less vigorously with dilute acids.

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Dilute acids do not react with metals like Cu, Hg, Ag, Pt, Au. Not all metals react with bases.

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The metals like Zinc and Aluminium react with bases to liberate hydrogen. These metals are called amphoteric metals.

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Reaction of zinc with dilute hydrochloric acid

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When sodium hydroxide solution is heated with zinc, sodium zincate and hydrogen gas are formed.

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