2KClO3 \(\rightarrow\) 2KCl + 3O2
\(n_{O_2}=n_{KClO_3}\cdot\dfrac{3}{2}=1\cdot\dfrac{3}{2}=1,5\left(mol\right)\)
\(\Rightarrow m_{O_2pư}=n\cdot M=1,5\cdot32=48\left(g\right)\)
\(\Rightarrow H=\dfrac{43,2}{48}\cdot100\%=90\%\)
nO2 = \(\dfrac{43,2}{32}=1,35\left(mol\right)\)
PT:
2KClO3 -----t---> 2KCl + 3O2
0,9........................................1,35(mol)
Mà: nKClO3 tt = 1 mol
=> H= \(\dfrac{0,9}{1}.100\%=90\%\)
2KClO3 ------> 2KCl + 3O2
8,16 - 8,16 - 12,24 (mol)
Khối lượng khí oxi theo pt
mO2= 12,24 × 32 = 391,68g
Hiệu suất phản ứng
H = ( 43,2 / 391,68 ) × 100 = 11,03 %