Which of the following will react violently with water to form a base?
Chlorine
Cobalt
Aluminum
Calcium
Potassium
A
Aluminum
B
Calcium
C
Chlorine
D
Cobalt
E
Potassium
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Solution
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Potassium will react violently with water to form a base. 2K+2H2O→2KOH+H2
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