\(n_{KMnO_4}=\dfrac{15,8}{158}=0,1mol\)
\(2KMnO_4\rightarrow\left(t^o\right)K_2MnO_4+MnO_2+O_2\)
0,1 0,05 ( mol )
\(V_{kk}=V_{O_2}.5=\left(0,05.22,4\right).5=5,6l\)
2KMnO4-to>K2MnO4+MnO2+O2
0,1------------------------------------0,05
n KMNO4=0,1 mol
=>VO2=0,05.22,4=1,12l
=>Vkk=1,12.5=5,6l