Conduct an experiment to show that hydrogen gas is released when acid combines with a metal
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Explanation:
When an acid combines with metal it forms salt and release hydrogen gas
Metal + acid – metal salt + H2
2Na + H2Co3 – Na2Co3 + H2
When a base combine with metal it forms metal salt / base and release hydrogen gas
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Explanation:
When Hydrochloric Acid react with metal above hydrogen in the activity series forming metallic chloride and evolving Hydrogen.
Ca + 2HCL --- CaCl2 + H2(gas).
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