16 One molecule of an oxide of element Z reacts with six molecules of water to produce an acidic
compound
What is element Z?
A aluminium
B phosphorus
Csilicon
D
sulfur
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Answer:
I can guess that Z is Phosphorus. So the oxide - P4O10 (but the most known, its empirical formula P2O5). Reaction with water:
P4O10 + 6H2O = 4H3PO4. Acidic compound is phosphoric acid.
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