nKClO3=0,04 mol
nKCl=0,034 mol
2KClO3. =>2KCl. +3O2
0,034 mol<=0,034 mol=>0,051 mol
H%=0,034/0,04.100%=83,89%
VO2=0,051.22,4=1,1424 lit
\(n_{KClO_3}=\frac{4,9}{122,5}=0,04\left(mol\right)\)
\(n_{KCl}=\frac{2,5}{74,5}=0,034\left(mol\right)\)
\(2KClO_3->2KCl+3O_2\left(1\right)\)
theo (1) \(n_{KClO_3\left(pư\right)}=n_{KCl}=0,034\left(mol\right)\)
hiệu suất phản ứng là
\(\frac{0,034}{0,04}.100\%=83,89\%\)
theo (1) \(n_{O_2}=\frac{3}{2}n_{KCl}=0,051\left(mol\right)\)
=> \(V_{O_2}=0,051.22,4=1,1424\left(l\right)\)