CuS04+2NaoH-----> Cu(OH)2 +Na2So4
FeCl3 + вода
-
K2So4 + Al(OH)3
N(K)=56.5/39=1.4
n(C)=8.7/12=0.7
n(O)=34.8/16=2.1
x:y:z=n(K):n(C):n(O)=1.4:0.7:2.1=2:1:3
K2CO3
Na2SO4+Ba(NO3)2=BaSO4+2NaNO3
n(na2so4)=m/M=200/142=1.4(моль)
n(baso4)=n(na2so4)=1.4 моль
m(baso4)=n*M=1.4*233=326.2 (г)
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