Question

Write balanced chemical equations for the following reactions: (a) Iron reacts with steam. (b)Magnesium reacts with dilute HCl. (c)Ammonia and hydrogen chloride gases are mixed

Answer 1

reaction reaction of ammonia and HCL gasNH3(g) + HCl(g) = NH4Cl

• Change in Free Energy: ΔG(20C) = -92.8kJ (negative, so the reaction runs)

Change in Enthalpy: ΔH(20C) = -176.4kJ (negative, so the reaction is exothermic

A.reaction of iron with steam--When a metal reacts with steam then the products formed are metal oxide and hydrogen gas.

Metal + steam --------> Metal oxide + Hydrogen

When red hot iron reacts with steam to form iron(II,III) oxide and hydrogen.

3Fe(s) + 4H2O(g) steam -------> Fe3O4 (s) + 4H2(g)

3.Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2(g)

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