(c) State your observations and write balanced equations.
(i) Sodium chloride solution is mixed with lead nitrate solution.
(ii) Ethylene gas is passed through a solution of bromine in carbon tetrachloride.
(iii) Sodium hydroxide is added to iron (III) sulphate solution
(iv) Chlorine is passed through a solution of potassium iodide.
(v) Ammonium hydroxide solution is added to copper sulphate solution in excess.
no for the laboratory preparation of the following gases:
Answers
Answer:
1) lead chloride as a precipitate is formed with sodium nitrate
2)When ethene is passed in bromine solution in CCI4, the orange colour of bromine disappears due to formation of colourless ethylene bromide
3)Fe2(SO4)3 + NaOH -> Fe(OH)3 + Na2SO4.
4)When chlorine (Cl2) gas is passed through an aqueous solution of potassium iodide (KI), the products formed are solid iodine (I2) and potassium chloride (KCl). This is a displacement reaction in which the less reactive iodine in potassium iodide is displaced by the more reactive chlorine.
5)When an aqueous solution of ammonia is added to the solution of copper (II) sulphate, a pale blue coloured precipitate of copper hydroxide is formed . this dissolves in the excess of the aqueous solution to give the deep blue colour solution containing the complex ion, tetraamminecopper (II).
Explanation:
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