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Write chemical equations for the following when
(a) Silver bromide is exposed to sunlight.
(b) A piece of lead metal is dropped into copper (II) chloride solution.
(c) Hydrogen gas is passed over heated copper oxide.
(d) Methane gas is burnt in air.
(e) Quick lime is mixed with water.
(a) Silver bromide is exposed to sunlight.
(b) A piece of lead metal is dropped into copper (II) chloride solution.
(c) Hydrogen gas is passed over heated copper oxide.
(d) Methane gas is burnt in air.
(e) Quick lime is mixed with water.
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(a) $\ce{2AgBr(s) ->[Sunlight] 2Ag(s) + Br2(g)}$ (1 Mark)
(b) $\ce{Pb(s) + CuCl2(aq) -> PbCl2(aq) + Cu(s)}$ (1 Mark)
(c) $\ce{CuO(g) + H2(g) -> Cu(g) + H2O(g)}$ (1 Mark)
(d) $\ce{CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g) + Heat}$ (1 Mark)
(e) $\ce{CaO(s) + H2O(l) -> Ca(OH)2(aq) + Heat}$ (1 Mark)
(b) $\ce{Pb(s) + CuCl2(aq) -> PbCl2(aq) + Cu(s)}$ (1 Mark)
(c) $\ce{CuO(g) + H2(g) -> Cu(g) + H2O(g)}$ (1 Mark)
(d) $\ce{CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g) + Heat}$ (1 Mark)
(e) $\ce{CaO(s) + H2O(l) -> Ca(OH)2(aq) + Heat}$ (1 Mark)