Write balanced chemical reactions for the following and name the type of reaction –
a) Solid lead nitrate is heated
b) Quick lime is added to water
c) Iron nails are added to a solution of Silver Bromide

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Solution

a) $2 P b (N O_{3})_{2} (s) \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$ , decomposition reaction

b) $C a O (s) + H_{2} O (l) \to C a (O H)_{2} (a q)$ , combination reaction

(Quick lime) (Slaked lime)

c) $F e (s) + 3 A g B r (a q) \to F e (B r)_{3} (a q) + 3 A g (s)$ , displacement reaction

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H_{2} {S O}_{4}

.
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(i) State the observation when a solution of potassium iodide is added to a solution of lead nitrate taken in a test tube?
(ii) What type of reaction is this?
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(a) Write a balanced equation for the reaction of zinc and dilute hydrochloric acid.
(b) State what is observed when hydrochloric acid is added to silver nitrate solution.

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Write balanced chemical reactions for the following and name the type of reaction – a) Solid lead nitrate is heated b) Quick lime is added to water c) Iron nails are added to a solution of Silver Bromide

a) 2Pb(NO3)2(s) → 2PbO(s)+4NO2(g)+O2(g), decomposition reaction b) CaO(s)+H2O(l) → Ca(OH)2(aq), combination reaction (Quick lime) (Slaked lime) c) Fe(s)+3AgBr(aq) → Fe(Br)3(aq)+3Ag(s), displacement reaction

Write balanced chemical reactions for the following and name the type of reaction –
a) Solid lead nitrate is heated
b) Quick lime is added to water
c) Iron nails are added to a solution of Silver Bromide

a) $2 P b (N O_{3})_{2} (s) \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$ , decomposition reaction

b) $C a O (s) + H_{2} O (l) \to C a (O H)_{2} (a q)$ , combination reaction

(Quick lime) (Slaked lime)

c) $F e (s) + 3 A g B r (a q) \to F e (B r)_{3} (a q) + 3 A g (s)$ , displacement reaction