The reaction of _____produces Hydrogen gas?

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The reaction of _____produces Hydrogen gas?

A. Cu with HNO3
B. Co with HCI
C. Ag with HCI
D. Hg with HCI
E. Au with HNO3

2007-03-04 18:31:52 · 3 answers · asked by ChristFirst00 2 in Science & Mathematics ➔ Chemistry

3 answers

B - all the others either don't react, or produce nitrogen oxides.

2007-03-04 18:35:28 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋

the answer is Co with HCl because Co has a greater tendency to be oxidized than H+, so the reaction will produce a hydrogen gas, by reducing H+ ion to H2 gas

2007-03-04 18:36:09 · answer #2 · answered by Hanz 2 · 0⤊ 0⤋

2007-03-04 18:41:01 · answer #3 · answered by Gagalitera 5 · 0⤊ 0⤋