Question
Question: Reaction between following pairs will produce hydrogen except :...
Reaction between following pairs will produce hydrogen except :
A
Cu + HCl
B
Fe + H2O (g)
C
Mg + H2O (hot)
D
Na + Alcohol
Answer
Cu + HCl
Explanation
Solution
(1) Cu + HCl ⟶ No reaction
(2) 3Fe + 4H2O (g) ⟶ Fe3O4 + 4H2 ↑
(3) Mg + 2H2O (hot) ⟶ Mg(OH)2 + H2
(4) Na + C2H5OH ⟶ C2H5ONa + H