KBr+H2O
KNO3+H20
3KOH+H3PO4=K3PO4+3H20
2KOH+H2SO4=K2SO4+2H20
Mg(OH)2+2HBr=MgBr2+2H20
Mg(OH)2+2HNO3=Mg(NO3)2+2H20
3Mg(OH)2+2H3PO4=Mg3(PO4)2+6H20
Mg(OH)2+H2SO4=MgSO4+2H20
<span>w=5%=0,05 </span>
<span>m(р-ра)=500г</span>
<span>w=m(йода)/m(р-ра)-> m(йода)=0,05*500=25(г) </span>
<span>m(р-ра)=m(йода)+m(спирта) -> m(спирта)= 500-25=475(г)</span>
CaCl2=Ca2++2Cl-
CaBr2=Ca2++2Br-
FeCl2=Fe2++2Cl-
FeBr2=Fe2++2Br-
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