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10 December, 07:53

Which element reacts spontaneously with 1.0M HCl (aq) at room temperature?

(1) copper (3) silver (2) gold (4) zinc

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  1. 10 December, 10:02
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    The answer is (4) zinc. Zinc can react with HCl at room temperature spontaneously and create H2. You can know this property from the metal activity order.
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