Which of the following metals does not react with water to produce hydrogen?
CHEMISTRY
WAEC 2020
Which of the following metals does not react with water to produce hydrogen?
- A. Copper
- B. Potassium
- C. Sodium
- D. Zinc
Correct Answer: A. Copper
Explanation
Most alkali metals and alkaline earth metals react with water to produce hydrogen. The alkali metals comprise Group 1 of the periodic table, and include lithium, sodium, potassium, etc.
- Zinc is not much reactive with cold or room temperature water but reacts with steam to form zinc oxide and liberate hydrogen gas.
- Copper lies below hydrogen in the activity series of metals, therefore it can not displace hydrogen from water
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