Question

calcular la composicion centesimal del permanganato de potasio

Answer 1

1. Calcular Mm KMnO4
   K: 1 x 39 = 39 g/mol
Mn: 1 x 55 = 55g/mol  O: 4 x 16 = 64 g/mol```````````````````````````````````          Mm = 158 g/mol
2. calcular % de cada elemento
Potasio
          158 g ----- 100 %            39 g -----    x
             x = 24.68 % K
Manganeso
          158 g ----- 100 %            55 g -----    x
             x = 34.81 % Mn
Oxigeno
          158 g ----- 100 %            64 g -----    x
             x = 40.50  % O