One of these reactions represents the laboratory preparation of hydrogen.
A. \(\mathrm{C}(\mathrm{s})+\mathrm{H}_{2} \mathrm{O}(\mathrm{I}) \rightarrow \quad \mathrm{E}\) \(\mathrm{CO}(\mathrm{g})+\mathrm{H}_{2}(\mathrm{~g})\)
B. \(2 \mathrm{Na}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(1) \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})\)
C. \(\mathrm{Cu}(\mathrm{s})+\mathrm{H} \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{CuO}(\mathrm{s})+\mathrm{H}_{2}(\mathrm{~g})\)
D. \(2 \mathrm{Al}(\mathrm{s})+3 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Al}_{2} \mathrm{O}_{3}(\mathrm{~s})+3 \mathrm{H}_{2}(\mathrm{~g})\)
E. \mathrm{Zn}(\mathrm{s})+2 \mathrm{HCl}(\mathrm{aq}) \rightarrow \mathrm{ZnCl}_{2}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})\)
Correct Answer: E
