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8 October, 23:58

Which reacts with metals to form H2 gas

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  1. 9 October, 00:22
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    Answer: acid react with metals to form H2.

    Explanation: metals which are more electropositve than hydrogen will always displaced hydrogen from acids. The equation below show how hydrogen is displaced from acid

    Zn + 2HCl - -> ZnCl2 + H2
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