<span><span>2Fe</span>+<span>6<span>HCl</span></span> → <span>3<span>H2</span></span>+<span>2<span>FeCl3
</span></span></span><span><span>FeCl3</span>+<span>3<span>H2O</span></span> → <span>3<span>HCl</span></span>+<span>Fe<span>(OH)</span>3
</span></span><span><span>2<span>Fe<span>(OH)</span>3</span></span> → <span>Fe2O3</span>+<span>3<span>H2O
</span></span></span><span><span>2<span>Fe2O3</span></span> → <span>4Fe</span>+<span>3<span>O2
</span></span></span><span>Fe+<span>H2SO4</span> → <span>FeSO4</span>+<span>H2
</span></span><span><span>FeSO4</span>+<span>2<span>NaOH</span></span> → <span>Fe<span>(OH)</span>2</span>+<span>Na2SO4
</span></span><span><span>Fe<span>(OH)</span>2</span> → <span>H2O</span>+<span>FeO
</span></span><span><span>2<span>FeO</span></span> → <span>2<span>Fe</span></span>+<span>O<span>2</span></span></span>
жидкие - вода, твердые - лед, газообразные - пар. а также раствор сахара в воде, раствор соли в воде- однородные
4P + 5O2 = 2P2O5
2P + 3Ca = Ca3P2
2P + 3S = P2S3
2P + 3Cl2 = 2PCl3
4Р + 6Н2О = РН3 + 3Н3РО2
4Р + 3KOH + 3Н2О = РН3 + 3KН2РО2
3P + 5HNO3 + 2H2O = 3H3PO4 + 5NO
2P + 5H2SO4 = 2H3PO4 + 5SO2 + 2H2O
6P + 5KClO3 = 5KCl + 3P2O5.
1) H2S, Fe(OH)3, CaCl2;--h2oh3
2) H2SO4, NaOH, NaNO3;--0H4
3) HNO3, Ca(OH)2, FeCl3;--3H2o
4)HCl, KOH, Cu(NO3)2.--Hci3
S + 2H2SO4 ------> 3SO2 + 2H2O
S[0] - 4e ---> S[+4] 1 окисление, восстановитель
S[+6] + 2e ---> S[+4] 2 восстановление, окислитель
Хотя, если честно, я и так их подобрал