Question

Stabiliti coeficientii reactiilor redox? HCL+MN02=CL+MNCL2+H2O
HCOOH+KMn04+H2SO4=CO2+H2O+K2SO4+MnSO4​

Answer 1

Răspuns:

4 HCl  + MnO2  → MnCl2 + Cl2  + 2 H2O

MnIV + 2 e- → MnII (reducere) agent oxidant

2 Cl-I - 2 e- → 2 Cl0 (oxidare) agent reducator

5 HCOOH + 2 KMnO4 + 3 H2SO4 → K2SO4 + 2 MnSO4 + 8 H2O + 5CO2↑

2 MnVII + 10 e- → 2 MnII (reducere) agent oxidant

5 CII - 10 e- → 5 CIV (oxidare) agent reducator

Explicație: