<span>MnCl2+KBrO+2KOH=MnO2+KBr+2KCl+H2O
</span>
Mn²⁺ +4OH⁻ -2e = <span>MnO₂+2H₂O | 1
</span>
BrO⁻ +<span>H₂O + 2e =Br⁻ + 2OH⁻ |1
-------------------------------------------------- </span>
Mn²⁺ +2OH⁻ + BrO⁻ <span> = </span><span>MnO₂+H₂O + </span><span><span>Br⁻ </span></span>
W = n*Ar/Mr
H2O
W (H)=2*1/18=0,11 (11%)
NH3
W(H)=3*1/17=0,18 (18%)
CH4
W(H)=4*1/16=0,25 (25%)
В порядке возрастания W(H):
H2O, NH3, CH4
2naoh+H2SO4=na2so4+h2o
2na+2oh+2h+so4=2na+so4+h2o
2oh+2h=h2o
na2so4+ba(oh)2=2naoh+baso4
2na+so4+ba+2oh=2na+2oh+ba+so4
cacl2+h2co3=caco3+2hcl
ca+2cl+2h+co3=caco3+2h+2cl
ca+co3=caco3
caco3=cao+co2
......................................................................
Na///////////////////////////////////////////