Здравствуйте.
FeCl₃ + 3NaOH = Fe(OH)₃↓ + 3NaCl
1)<span>С</span><span>aC</span>2+2<span>H</span>2<span>O</span><span>получаем </span><span>CH</span><span> тройная связь </span><span>CH+ Ca(OH)2</span>
2) <span>CH</span><span> тройная связь </span><span>CH</span>+ <span>H</span>2<span>O</span><span>получаем</span><span>CH</span>3<span>CHO</span>
3) <span>CH</span>3<span>CHO</span><span>получаем</span><span>CH</span>3<span>COOH</span>(Условие <span>H</span>)- ОКИСЛЕНИЕ
<span>4) CH3COOH+ CH3-OH </span><span>получаем</span><span><span> </span>CH3COOCH3+ H2O</span>
X=Ar(s)÷W(s); y=Ar(Al)÷W(Al);
х=3
у=2
Ответ:Al2S3