А)h2so4+ba(oh)2=baso4(осадок)+2h2o
2h+ +so4 2- + ba2+ +2oh- = baso4(осадок)+<span>2h2o
</span>
<span> 3h2so4+2al(oh)3=al2(so4)3(осадок)+6h2o
6</span>h+ +3so4 2- +2al(oh)3 <span>= 2al 3+ +3so4 2- + 6h2o
</span>6h+ +2al(oh)3 = 2al 3+ + 6h2o<span>
</span>h2so4+zn(oh)2=znso4+2h2o
2h+ +so4 2- + zn(oh)2 = zn2+ so42- +2h2o
2h+ + zn(oh)2 = zn2+ <span>+2h2o
</span>
h2so4+2koh=k2so4+2h2o
2h+ +2oh- = 2h2o
h+ +oh- <span>= </span>h2o<span>
</span>б)2hno3+ cu(oh)2 = cu(no3)2 + 2h2o
2h+ +2no3- <span>+ cu(oh)2 =cu2+ 2no3- +2h2o
</span> <span> 2h+ </span>+ cu(oh)2 =cu2+ +2h2o
hno3+ koh = kno3 + h2o
h+ +no3- <span>+ k+ +oh- =k+ no3- +h2o
</span> h+ +oh- = h2o<span> </span>
2hno3+ mg(oh)2 = mg(no3)2 + 2h2o
2h+ +2no3- <span>+ mg(oh)2 =mg2+ 2no3- +2h2o
</span> 2h+ + mg(oh)2 =mg2+ +2h2o
V=2.5 (л)
n=V/Vm, где Vm - объем газа при н.у. = 22.4 (л/моль)
n=2.5/22.4=0.11(моль)
m=n*M
M(H2O)=2*1+16=18 (г/моль)
m=0.11*18=1.98 (г)
Оксиды металлических элементов: CuO, K2O, Na2O, CrO3, Mn2O7, PbO
Оксиды неметаллических элементов: H2O Br2O5 B2O3 Cl2O SiO2 SO3
3C +v 4Al = Al4C3
Al4C3 + 12H2O = 3CH4 + 4Al(OH)3
CH4 --[O]--> CH3OH
CH3OH + CuO = HCOH + Cu + H2O
HCOH + 2[Ag(NH3)2]OH = HCOOH + 2Ag + 4NH3 + 2H2O
2HCOOH + O2 = 2CO2 + 2H2O