Q.4. Give balanced equations for the action of heat on :
1. Lead nitrate
2. Sodium nitrate
3. Hypochlorous acid
4. Silver nitrate
5. Aluminium hydroxide
Answers
1.When lead nitrate is heated, it breaks down into lead monoxide, nitrogen dioxide, and oxygen. 2Pb(NO3)2→2PbO+4NO2+O2.
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2. Sodium Nitrate
NaNO3 = NaNO2 + O2
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3.Hypochlorous acid (HOCl or HClO) is a weak acid that forms when chlorine dissolves in water, and itself partially dissociates, forming hypochlorite, ClO−. HClO and ClO− are oxidizers, and the primary disinfection agents of chlorine solutions.
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4.Silver nitrate decomposes when heated: 2AgNO3(l) → 2 Ag(s) + O2(g) + 2 NO2(g)
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5.The equation for the action of heat on aluminium hydroxide is 2 Al (OH) ₃ → Al₂O₃ + 3 H₂O. ... It breaks down in the form of aluminium oxide and three molecules of water.
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1. Lead nitrate 2pb(No3)2 = 2pbo+4No2+O2
2. sodium nitrate 2NaNo3 = 2NaNo3+ O2