Question

state the type of chemical reaction with chemical equation that take place in the following. 1. magnesium wire is burnt in air. 2. electric current is passed through water 3. ammonia and hydrogen chloride gases are mixed.​

Answer 1

1) oxidation of magnesium: (Combination reaction)

2Mg(s) + O2(g) -------> 2MgO(g)

2)electrochemical reaction: (Decomposition Reaction)

Hydrogen(H+) will be produced at cathode and oxygen(O2-) will be produced at anode.

3)Combination reaction:

NH3(g) + HCl(g) ------> NH4Cl (s)

hope it helps.

Answer 2

Answer:

1. Combination reaction

2Mg (s) + O2 (g)--> 2MgO (s)

2. Decomposition reaction

2H2O (l) --> 2H2 (g) + O2 (g)

3. Combination reaction

NH3 (g) + HCl (g) --> NH4Cl (s)

[ Ammonia is NH3, hydrogen chloride is HCl and NH4Cl is ammonium chloride]

Hope this helps you.