2023

Chemistry

POST UTME

One of these represents the laboratory preparation of hydrogen

A.

C+ H $_2$ 0 → CO + H $_2$

B.

Zn + 2HCl → ZnCl + H $_2$

C.

2Na + 2H $_2$ 0 → 2NaOH + H $_2$

D.

2Al(s) + 3H $_2$ 0 $_(l)$ → Al $_2$ O $_3$ (s) 3H $_2$ (g)

Correct Answer:
Zn + 2HCl → ZnCl + H $_2$

Explanation

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