2C4H6+11O2=8CO2+H2O+Q
2дм3 C4H6 ---- 8 дм3 CO2
60 дм3 C4H6 ---- x дм3 CO2
x= 60*8/2=240 дм3
Ответ :
Б) ,Потому что характерна для горение ,разложения и гидратации
<span>6K + N2 ---> 2K3N</span>
3Ba + 2O2 ---> 2BaO + BaO2
<span>2Al + 3NiSO4 ---> 3Ni +Al2(SO4)3
</span>
<span><span>BaO + 2HCl (разб.) ---> BaCl</span>2<span> + H</span>2<span>O </span></span>
<span><span>BaO + 2Н(+) + 2Сl(-) ----> Ba(2+)+ 2Cl(-) + H2O </span></span>
<span><span><span>3Ba(OH)2 + 2AlCl3 ---> 2Al(OH)3 + 3BaCl2
</span></span></span>
<span><span><span><span>3KOH+ CrCl3 + ---> Cr(OH)3↓ + 3KCl</span></span></span></span>
<span><span><span><span>3K (+) + 3OH(-) + Cr (3+) + 3Cl(-) ---> Cr(OH)3↓ + 3K (+)+ 3Cl(-)</span></span></span></span>
<span><span><span><span> 3OH(-) + Cr (3+)---> Cr(OH)3↓</span></span></span></span>
<span><span><span><span><span>Al</span>2<span>O</span>3<span> + 2NaOH ---> 2NaAlO</span>2<span> + H</span>2<span>O (при сплавлении)</span></span></span></span></span>
<span><span><span><span><span><span>2Al(ОН)3+3H2SO4 = Al2(SO4)3+6H2O
</span></span></span></span></span></span>
1) P2O5 + 3H2O = 2H3PO4
2) H2SO4 + Ba(NO3)2 = BaSO4 + 2HNO3
2H[+] + SO4[2-] + Ba[2+] + 2NO3[-] = BaSO4 +2H[+] + 2NO3[-]
SO4[2-] + Ba[2+] = BaSO4
3) SO3 + Na2O = Na2SO4