2KOH + CuCl2 = Cu(OH)2 (осадок) + 2KCl
m(KOH) =104*0.2=20, 8г
V(KOH)=20,8/56≈0.37Моль
1/2=x/0.37
x=0.185Моль
m(Cu(OH)2)=0.185*98=18.3г
Ответ: 18.3г
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2KOH + CuCl2 = Cu(OH)2 (осадок) + 2KCl
m(KOH) =104*0.2=20, 8г
V(KOH)=20,8/56≈0.37Моль
1/2=x/0.37
x=0.185Моль
m(Cu(OH)2)=0.185*98=18.3г
Ответ: 18.3г