а) 2Al+3Cl2=2AlCl3
AlCl3+3AgNO3=Al(NO3)3+3AgCl
Al(NO3)3+3NaOH=Al(OH)3+3NaNO3
2Al(OH)3+3H2SO4=Al2(SO4)3+6H2O
б) Cu+Cl2=CuCl2
CuCl2+Zn=ZnCl2+Cu
2Cu+O2=2CuO
CuO+2NaNO3=Na2O+Cu(NO3)2
3)NaCl + AgNO3 = NaNO3 + AgCl (осадок),
M (NaCl) = 58.5 г/моль
M (AgCl) = 143.5 г/моль
M (AgNO3) = 170 г/моль, m(AgNO3) = 170*0.05 = 8.5 г v (AgNO3) = 8.5/170 = 0.05 моль
m (NaCl) = 58.5*0.05 = 2.925 г
m (AgCl) = 143.5*0.05 = 7.175г