Question

Write the chemical equation when:

i) Lead nitrate is heated to produce lead monoxide ,gaseous nitrogen dioxide and oxygen is
formed

ii) Potassium chlorate (KCIO3) on heating forms potassium chloride and oxygen.

iii) When magnesium metal reacts with aqueous hydrochloric acid ,it produces a solution of magnesium chloride and hydrogen gas.​

Answer 1

Answer:

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Explanation:

1.When lead nitrate is heated, it breaks down into lead monoxide, nitrogen dioxide, and oxygen. 2Pb(NO3​)2​→2PbO+4NO2​+O2​.

2.2KClO(s)→2KCl(s)+3O  2 (g).

2.2 molecules of Potassium chlorate (KClO3 ) on heating form 2 molecules of potassium chloride and  3 molecules of oxygen.2.2KClO(s)→2KCl(s)+3O  2 (g).

3.Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.