23. Chemistry of the Nonmetals
Group 1A and 2A Reactions
Multiple Choice
Multiple ChoiceAlkaline earth metals react with certain substances to produce hydrogen gas. Which of the following will result in hydrogen gas formation? Provide a balanced reaction.
a) Beryllium (Be) and O2
b) Barium (Ba) and CO2
c) Calcium (Ca) and H2O
d) Strontium (Sr) and O2
A
Beryllium (Be) and O2
2 Be(s) + O2(g) → 2 BeO(s)
2 Be(s) + O2(g) → 2 BeO(s)
B
Barium (Ba) and CO2
Ba(s) + 2 CO2(g) → BaO(s) + CO(g) + heat
Ba(s) + 2 CO2(g) → BaO(s) + CO(g) + heat
C
Calcium (Ca) and H2O
Ca(s) + 2 H2O(l) → H2(g) + Ca2+(aq) + 2 OH–(aq) + heat
Ca(s) + 2 H2O(l) → H2(g) + Ca2+(aq) + 2 OH–(aq) + heat
D
Strontium (Sr) and O2
2 Sr(s) + O2(g) → 2 SrO(s)
2 Sr(s) + O2(g) → 2 SrO(s)
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