a làm tắt số mol, e nhớ ghi đầy đủ nhé!
\(PTHH:2KClO_3\underrightarrow{t^o}2KCl+3O_2\)
(mol) 2__________2_____3
(mol) 0,5_________0,5___0,75
\(n_{KClO_3}=\frac{61,26}{122,5}=0,5\left(mol\right)\)
\(a.m_{KCl}=0,5.74,5=37,25\left(g\right)\\ b.V_{O_2}=22,4.0,75=16,8\left(l\right)\)
2KClO3--to->2KCl+3O2
n KClO3= 61,26/122,5=0,5 mol
=> nn KCl = 0,5 mol
n O2= 3/2 . 0,5=0,71 mol
a, mKCl = 0,5 . 74,5=37 , 25(g)
b,VO2=0,75 . 22,4 = 16,8 l