2KClO3--t0, xt--> 2KCl + 3O2
TA có nKClO3=49/122,5=0,4
=> nKClO3 PỨ =0,4.80/100=0,32
=> nO2=3/2 . 0,32=0,48
=> mO2= 0,48.32=15,36 g
\(n_{KClO_3}=\frac{49}{122,5}=0,4mol\)
PTHH : \(2KClO_3\underrightarrow{t^o}2KCl+3O_2\)
Theo PTHH : \(n_{O_2}=\frac{3}{2}n_{KClO_3}=\frac{3}{2}0,4=0,6mol\)
=> \(m_{O_2}=0,6.32=19,2g\)
Hs = 80% ; mO2 (tt) = 19,2 / 100 .80 = 15,36 g
mKClO3 (pư) = 49*80/100=39.2 g
nKClO3 = 39.2/122.5=0.32 mol
2KClO3 -to-> 2KCl + 3O2
0.32_______________0.48
mO2 = 0.48*32 = 15.36 (g)
KClO3 --> 2KCl + 3O2
m\(KClO_3\) (pư) = 49.80% = 39,2 g
n\(KClO_3\) = \(\frac{39,2}{122,5}\) = 0,32 mol
Theo PTHH ta có: n\(O_2\) = \(\frac{0,32.3}{2}\) = 0,48 mol
m\(O_2\) = 0,48.32 =15,36 g