balanceie as equaçoes em meio alcalino

Question

a) AL+NO3-+OH=AL(OH)-4+NH3

b)PBO2(s)+CL=CLO-+PB(OH)-3

c)N2H4+CU(OH)2=N2+CU

Answer 1

(a) 8Al+3NO₃⁻​+18H₂​O+5OH⁻⇌8Al(OH)₄⁻​+3NH₃​

(b) 

Here 

2e^– + PbO₂ → [Pb(OH)₃]^– 

2H₂O + 2e^–PbO₂² → [Pb(OH)₃] + OH^– …(i) 

2OH + Cl^– → ClO^– + 2e^– + H₂O …(ii)

Add (i) & (ii) 

PbO₂ + OH^– + Cl^– + H₂O → [Pb(OH)₃]^– + ClO^–