Question

Dung kaliclorat(KCLO3) de dieu che 6,72 lit khi oxi(dktc)

a) Viet PTHH

b)Tinh khoi luong KCLO3 can dung

Answer 1

a) nO2= 6,72/22,4=0,3(mol)

PTHH: 2 KClO3 -to-> 2 KCl + 3 O2

b) nKClO3= 2/3. nO2= 2/3. 0,3=0,2(mol)

=> mKClO3=122,5.0,2= 24,5(g)

Answer 2

\(n_{O_2}=\frac{6,72}{22,4}=0,3\left(mol\right)\\ PTHH:KClO_3\underrightarrow{t^o}KCl+\frac{3}{2}O_2\\ \left(mol\right)--0,2------0,3--\\ m_{KClO_3}=0,2.122,5=24,5\left(g\right)\)