Question

Tinh khoi luong Kalipemanganat can thiet de dieu che duoc 16,8 lit O₂

Answer 1

\(n_{O_2}=\dfrac{16.8}{22.4}=0.75\left(mol\right)\)

\(2KMnO_4\underrightarrow{t^0}K_2MnO_4+MnO_2+O_2\)

\(1.5..............................................0.75\)

\(m_{KMnO_4}=1.5\cdot158=237\left(g\right)\)

Answer 2

2KMnO4-to>K2MnO4+ MnO2+O2

n O2=16,8\32=0,525 mol

=>m KMnO4=0,525.2.158=165,9g