CuCl2 + 2NaNO3 -> Cu(NO3)2 + 2NaCl
W(K)=(39/101)*100%=38,6%
w(N)=(14/101)*100%=13,86%
w(O)=100%-38,6%-13,86%=47,54%
NH₄Cl + NaOH = NaCl + H₂О + NH₃
n(NH₄Cl) = n(NH₃) = 0,1 моль
<span>m(NH</span>₄<span>Cl) = 0,1*53,5 = <span>5,35 г</span></span>
CuSO4 + Zn = ZnSO4 + Cu
3Cu + 8HNO3 = 3Cu(NO3)2 + 2NO + 4H2O
Cu(NO3)2 + 2NaOH = Cu(OH)2 + 2NaNO3
Cu(OH)2 (t)= CuO + H2O
CuO + H2SO4 = CuSO4 + H2O