CuSO4 + Ba(NO3)2 = BaSO4 + Cu(NO3)2
Cu(+2) + SO4(-2) + Ba(+2) + 2NO3(-) = BaSO4 + Cu(+2) + 2NO3(-)
Ba(+2) + SO4(-2) = BaSO4
CuSO4 + 2LiOH = Cu(OH)2 + Li2SO4
Cu(+2) + SO4(-2) + 2Li(+) + 2OH(-) = Cu(OH)2 + 2Li(+) + SO4(-2)
Cu(+2) + 2OH(-) = Cu(OH)2
CuSO4 + Zn = ZnSO4 + Cu
Cu(+2) + SO4(-2) + Zn(0) = Zn(+2)+ SO4(-2) + Cu(0)
Cu(+2) + Zn(0) = Zn(+2) + Cu(0)
CuSO4 + 2NaOH = Cu(OH)2 + Na2SO4
Cu(+2) + SO4(-2) + 2Na(+) + 2OH(-) = Cu(OH)2 + 2Na(+) + SO4(-2)
Cu(+2) + 2OH(-) = Cu(OH)2
Mg + H2SO4 = MgSO4 + H2
n(Mg) = n(MgSO4)
m(Mg) = (1-0,04)*50г. = 48 г.
n(Mg) = m/M = 48 г./24г. = 2 моль
<span>n(Mg) = n(MgSO4) = 2 моль
</span>m= n*M = 2* 120 г/моль= 240 г.
Zn + 2HCl = ZnCl2 + H2
130/65 = x/22.4
x = (130*22.4)/65 = 44.8 литров.
Mr(BaCl2)=137+35,5*2=208
M(BaCl2)=137+35,5*2=208 г/моль