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rozSaidova
@rozSaidova
August 2021
2
5
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Осуществить несколько превращений: 1. P
-
P5O5
-
H3PO4
- Ca
3(PO4
)2
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Answers & Comments
DianaI
1.
4P+5O2=2P2O5
2.
P2O5+3H2O=2H3PO4
3.
2H3PO4+3Ca(OH)2=Ca3(PO4)2+6H2O
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Kailissa
P+O2=P2O5
P2O5+H2O=H3PO4
H3PO4+Ca(OH)2=Ca3(PO4)2+H2O
если уровнять:
4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
H3PO4+Ca(OH)2=Ca3(PO4)2+H2O (не знаю)
0 votes
Thanks 0
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Answers & Comments
2. P2O5+3H2O=2H3PO4
3. 2H3PO4+3Ca(OH)2=Ca3(PO4)2+6H2O
P2O5+H2O=H3PO4
H3PO4+Ca(OH)2=Ca3(PO4)2+H2O
если уровнять:
4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
H3PO4+Ca(OH)2=Ca3(PO4)2+H2O (не знаю)