Question

write balanced chemmical reaction for: (A) iron with steam (B) calcium and pottasium with water (C) steam passed over red hot steam (D) zinc sulphite heated in air (E) cinnabar heated in air (F) magenese dioxide if heated with aluminium oxide powder (G) how is copper obtained from copper (ii) sulphite. write equation

Answer 1

(A) 3Fe + 2O2 --> Fe3O4

(B) Ca + 2H2O --> Ca(OH)2 + H2

2K + 2H2O --> 2KOH +H2

(C) 3Fe + 4H2O = Fe3O4 + 4H2

(D) 2ZnS + 3O2 = 2ZnO + 2SO2

(E) 2HgS + 3O2 --> 2HgO + 2SO2

(F) 3MnO2 + 4Al → 3Mn + 2Al2O3 + heat

(G) Copper is less reactive than carbon, so it can be extracted from its ores by heating it with carbon. For example, copper is formed if copper oxide is heated strongly with charcoal, which is mostly carbon:

copper(II) oxide + carbon → copper + carbon dioxide

2CuO + C → 2Cu + CO2

Removing oxygen from a substance is called reduction. The copper oxide is reduced to copper in the reaction above.

Answer 2

HEY MATE HERE IS YOUR ANSWER

(1) 3Fe(s) +4H2O(g) ----------> Fe3O4(aq) +4H2(g)
2.Ca(s) +2H2O(1)---------->Ca(OH)2(aq)+H2(g)
3.3Fe+4H2O------>Fe3O4+4H2
4.Zns+O2------>Zno+so2
5.2Hgs(s)+3O2(g)----->2HgO+2SO2(g)
6.3MnO2(s)+4AI(s)------->3Mn(1)+2AI2O3(s)+heat
7. 2Cus+3O2 2Cu2O+2S02

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