Write chemical equations for reactions taking place when:
i) Manganese dioxide is heated with aluminium powder.
ii) Steam is passed over hot iron.
iii) A mixture of ammonia and oxygen is passed over platinum heated to 1073 K.

Question

Philoid · Accepted Answer

i) Manganese dioxide is heated with aluminium powder.
3MnO₂(s) + 4Al (s)

3Mn(l) + 2Al₂O₃ ii) Steam is passed over hot iron.
3Fe(s) + 4H₂O

Fe₃O₄ (s) +4H₂iii) A mixture of ammonia and oxygen is passed over platinum heated to 1073K
4 NH₃ (g) + 5O₂(g)

4NO(g) + 6H₂O.

Write chemical equations for reactions taking place when:i) Manganese dioxide is heated with aluminium powder.ii) Steam is passed over hot iron.iii) A mixture of ammonia and oxygen is passed over platinum heated to 1073 K.