Объяснение:
3KOH + H3PO4 = K3PO4 + 3H2O
3K(+) + 3OH(-) + 3H(+) + PO4(3-) = 3K(+) + PO4(3-) + 3H2O
H(+) + OH(-) = H2O
Fe(OH)3 + 3HCl = FeCl3 + 3H2O
Fe(OH)3 + 3H(+) + 3Cl(-) = Fe(3+) + 3Cl(-) + 3H2O
Fe(OH)3 + 3H(+) = Fe(3+) + 3H2O
Ba(OH)2 + N2O5 = Ba(NO3)2 + H2O
Ba(2+) + 2OH(-) + N2O5 = Ba(2+) + 2NO3(-) + H2O
2OH(-) + N2O5 = 2NO3(-) + H2O
Al2(SO4)3 + 6NaOH = 2Al(OH)3 ↓+ 3Na2SO4
2Al(3+) + 3SO4(2-) + 6Na(+) + 6OH(-) = 2Al(OH)3↓ + 6Na(+) + 3SO4(2-)
Al(3+) + 3OH(-) = Al(OH)3↓
Ba(OH)2 + Na2CO3 = BaCO3↓ + 2NaOH
Ba(2+) + 2OH(-) + 2Na(+) + CO3(2-) = BaCO3↓ + 2Na(+) + 2OH(-)
Ba(2+) + CO3(2-) = BaCO3↓
2NaOH + H2SO4 = Na2SO4 + 2H2O
2Na(+) + 2OH(-) + 2H(+) + SO4(2-) = 2Na(+) + SO4(2-) + 2H2O
H(+) + OH(-) = H2O
Al(OH)3 + 3HCl = AlCl3 + 3H2O
Al(OH)3 + 3H(+) + 3Cl(-) = Al(3+) + 3Cl(-) + 3H2O
Al(OH)3 + 3H(+) = Al(3+) + 3H2O
6KOH + P2O5 = 2K3PO4 + 3H2O
6K(+) + 6OH(-) + P2O5 = 6K(+) + 2PO4(3-) + 3H2O
6OH(-) + P2O6 = 2PO4(3-) + 3H2O
FeCl3 + 3NaOH = Fe(OH)3↓ + 3NaCl
Fe(3+) + 3Cl(-) + 3Na(+) + 3OH(-) = Fe(OH)3↓ + 3Na(+) + 3Cl(-)
Fe(3+) + 3OH(-) = Fe(OH)3↓
Ca(OH)2 + K2CO3 = CaCO3↓ + 2KOH
Ca(2+) + 2OH(-) + 2K(+) + CO3(2-) = CaCO3↓ + 2K(+) + 2OH(-)
Ca(2+) + CO3(2-) = CaCO3↓
2K+2H2O=2KOH+H2
2K+Cl2=2KCl
4Fe+3O2=2Fe2O3
2Fe+3Cl2=2FeCl3 и т. п.
2)a)BaCl2+H2SO4=BaSO4+2HCl
Ba(2+)+2Cl(-)+2H(+)+SO4(2-)=BaSO4+2H(+)+2Cl(-)
Ba(2+)+SO4(2-)=BaSO4
б) AgNO3+HCl=AgCl+HNO3
Ag(+)+NO3(-)+H(+)+Cl(-)=AgCl+H(+)+NO3(-)
Ag(+)+Cl(-)=AgCl
в) 3NaOH+Al(NO3)3=3NaNO3+Al(OH)3
3Na(+)+3OH(-)+Al(3+)+3(NO3)(-)=3Na(+)+3NO3(-)+Al(OH)3
3OH(-)+Al(3+)=Al(OH)3
3)C+O2=CO2
2C+O2=2CO
2C+Ca=CaC2
2H2SO4+C=CO2+2SO2+2H2O и т. п.
4)а) CH4+2O2=CO2+2H2O
б) С3Н8+5О2=3СО2+4Н2О
в) 2С2Н2+5О2=4СО2+2Н2О
5)w(C)=12/16=0.75 (75%)
w(H)=4/16=0.25 (25%)
Объяснение:
3) MgO, Na2O, Li2O, K2O, FeO, Fe2O3, P2O5, N2O5, Mn2O3
4) NH3 - N(III)H(I), PH3 - P(III)H(I), HCl- H(I)Cl(I), SiH4 - Si(IV)H(I), H2S - H(I)S(II)
5) Zn(II)S(II), Cu(I)S(II), Al(III)S(II), Sn(IV)S(II), P(V)S(II), Hg(II)O(II), K(I)S(II), B(III)O(II), Zn(II)O(II), Mn(IV)O(II), Ni(II)O(II), Cu(I)O(II), Sn(IV)O(II), Ni(III)O(II),
S(IV)O(II), As(V)O(II), Cl(VII)O(II)