a, \(2CO+O_2\rightarrow2CO_2\)
\(2KClO_3\rightarrow2KCl+3O_2\)
Ta có:
\(n_{CO2}=\frac{6,72}{22,4}=0,3\left(mol\right)\)
\(\Rightarrow n_{O2}=0,15\left(mol\right)\)
\(n_{KClO3}=\frac{0,15.2}{3}=0,1\left(mol\right)\)
\(\Rightarrow m_{KClO3}=0,1.122,5=12,25\left(g\right)\)
b,\(2CO+O_2\rightarrow2CO_2\)
\(n_{CO2}=\frac{3,36}{22,4}=0,15\left(mol\right)\)
\(\Rightarrow n_{CO2}=0,15\left(mol\right)\Rightarrow n_{O2}=0,15-0,075=0,075\left(mol\right)\)
\(\Rightarrow V=\left(0,15+0,075\right).22,4=5,04\left(l\right)\)