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agentPechenka
@agentPechenka
August 2022
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Помогите с химией!!!! Номер 2, пожалуйста
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julija2708
0 0 +2 -3
1) 2P + 3Mg = Mg3P2
P(0) +3e- = P(-3) 3 2
6
Mg(0) -2e- = Mg(+2) 2 3
2) Mg3P2 + 6H2O = 3Mg(OH)2 + 2PH3
-3 +7 +5 +4
3) 3PH3 + 8
HMnO4 = 3H3PO4 + 8MnO2 + 4H2O
P(-3) -8e- = P(+5) 8 3
24
Mn(+7) +3e- = Mn(+4) 3 8
4) H3PO4 + 3NaOH = Na3PO4 + 3H2O
5) 3Na3PO4 + 3CaCl2 = Ca3(PO4)2 + 6NaCl
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Answers & Comments
1) 2P + 3Mg = Mg3P2
P(0) +3e- = P(-3) 3 2
6
Mg(0) -2e- = Mg(+2) 2 3
2) Mg3P2 + 6H2O = 3Mg(OH)2 + 2PH3
-3 +7 +5 +4
3) 3PH3 + 8HMnO4 = 3H3PO4 + 8MnO2 + 4H2O
P(-3) -8e- = P(+5) 8 3
24
Mn(+7) +3e- = Mn(+4) 3 8
4) H3PO4 + 3NaOH = Na3PO4 + 3H2O
5) 3Na3PO4 + 3CaCl2 = Ca3(PO4)2 + 6NaCl