Question

PTHH theo so do va cho bit ty le so ngtử so ptử cua cac chat trong moi pan ứng sau day

A/ K + Cl2 - - >KCl

B/ Al + H2 SO4 - -> Al2 (SO4)3+ H2

C/ Fe2O +H2 - -> Fe+H2O

D/ P +O2 - - > Fe O3

E/ Fe ( OH)3 - - > FeO3 +H2O

Answer 1

a) 2 : 1 : 2

b) 2 : 3 : 1 : 3

c) 1: 1 : 2 : 1

d) 2 : 3 :2

e) Sai đề

Answer 2

a, \(2K+Cl_2\rightarrow2KCl\)

Tỉ lệ: \(K:Cl_2:KCl=2:1:2\)

b, \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

Tỉ lệ: \(Al:H_2SO_4:Al_2\left(SO_4\right)_3:H_2=2:3:1:3\)

c, \(Fe_2O+H_2\rightarrow2Fe+H_2O\)

Tỉ lệ: \(Fe_2O:H_2:Fe:H_2O=1:1:2:1\)

d, Sai đề =))