The Reaction of Calcium with Water
The Reaction of Calcium with Water. O 2 , H 2 , N 2 , F 2 , Cl 2 , Br 2 , I 2 Ca + 2H 2 O H 2 + Ca(OH) 2 H 2 (note “hydrogen” refers to both the element and the diatomic gas) 2H 2 + O 2 2H 2 O 2:1 2:1 The ¼ tube has a H 2 :O 2 of 1.7:1 ratio (closest to 2:1)
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