Chemistry, 10.03.2021 21:20, jtingley0502

1)why we use dilute acid in the preparation of H2 gas 2)why don't use HNO2, rather than use HCl and H2SO4 in the H2 gas preparation.

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1)why we use dilute acid in the preparation of H2 gas 2)why don't use HNO2, rather than use HCl and...