21. _fes + _hcl → _h₂s + _fecl₂
21. _fes + _hcl → _h₂s + _fecl₂
Answer
Explanation:
Step1: Balance sulfur atoms
The number of sulfur atoms is already balanced on both sides as there is 1 sulfur atom in FeS and 1 in H₂S.
Step2: Balance iron atoms
The number of iron atoms is already balanced as there is 1 iron atom in FeS and 1 in FeCl₂.
Step3: Balance hydrogen and chlorine atoms
To balance the hydrogen and chlorine atoms, we need 2 moles of HCl since there are 2 hydrogen atoms and 2 chlorine atoms on the right - hand side in H₂S and FeCl₂. 1FeS + 2HCl → 1H₂S + 1FeCl₂
Answer:
1, 2, 1, 1