Question

Calculati masa de baza rezultata cand: 2 moli de hidroxid de sodiu reactioneaza cu sulfat de cupru, va rog urgent

Answer 1

2NaOH+CuSO4 = Na2SO4+Cu(OH)2
M=masa moleculară
Masa moleculară NaOH=40g/mol
Masa moleculară Cu(OH)2=98g/mol
n=m/M => m=n•M=2 moli•40g/mol
=80g NaOH
2•40g NaOH............98g Cu(OH)2
80g NaOH..................xg Cu(OH)2
=> x=98g Cu(OH)2