a, \(PTHH:2KClO_3\rightarrow2KCl+3O_2\uparrow\)
b, Ta có :
\(n_{KClO3}=\frac{73,5}{122,5}=0,6\left(mol\right)\)
\(\rightarrow n_{KCl}=n_{KClO3}=0,6\left(mol\right)\)
\(\rightarrow m_{KCl}=0,6.74,5=44,7\left(g\right)\)
c, \(n_{O2}=\frac{3}{2}n_{KClO3}=0,9\left(mol\right)\)
\(\rightarrow V_{O2}=0,9.22,4=20,16\left(l\right)\)