{"id":8101,"date":"2024-02-23T07:44:29","date_gmt":"2024-02-23T02:14:29","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=8101"},"modified":"2024-02-23T15:57:17","modified_gmt":"2024-02-23T10:27:17","slug":"analytical-chemistry-icse-solutions-class-10-chemistry","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/analytical-chemistry-icse-solutions-class-10-chemistry\/","title":{"rendered":"ICSE Solutions for Class 10 Chemistry – Analytical Chemistry"},"content":{"rendered":"
ICSE Solutions<\/a>Selina ICSE Solutions<\/a><\/p>\n APlusTopper.com provides ICSE Solutions for Class 10 Chemistry Chapter 4 Analytical Chemistry for ICSE Board Examinations. We provide step by step Solutions for ICSE Chemistry Class 10 Solutions Pdf.\u00a0You can download the Class 10 Chemistry ICSE Textbook Solutions with Free PDF download option.<\/p>\n Download Formulae Handbook For ICSE Class 9 and 10<\/a><\/p>\n Question 1:<\/strong> What are the use of sodium and ammonium hydroxide in analytical chemistry ? Question 2:<\/strong> Out of the following metallic ions : Al3+<\/sup>, Ca2+<\/sup>, Cu2+<\/sup>, Pb2+<\/sup> and Zn2+<\/sup>; which one forms a white hydroxide which dissolves in an excess of either aqueous sodium hydroxide or ammonium hydroxide ? Question 3:<\/strong> Which reagent can be used to distinguish a solution containing a lead salt<\/a> from a solution containing a zinc salt ? Question 4:<\/strong> A metal, whose alloy is used in the construction of aircrafts, in the powdered form was added to sodium hydroxide solution, a colourless gas was evolved and after the reaction was over, the solution was colourless. Question 5:<\/strong> State the colour of the precipitate observed when caustic soda solution is added to the following solutions (prepared in water): Question 6:<\/strong> The questions (i) to (v) refer to the following salt<\/a> solutions listed A to F : Question 7:<\/strong> What do you observe when caustic soda solution is added to the following solutions first a little and then in excess : Question 8:<\/strong> (i) What are amphoteric metals ?. Describe their reactions with hot caustic alkali<\/a>. Question 1:<\/strong> Sodium hydroxide solution is added first in a small quantity, then in excess to the aqueous salt solution of copper (II) sulphate, zinc nitrate, lead nitrate, calcium chloride and iron (III) sulphate. Copy the following table and write the colour of the precipitate in (i) to (v) and the nature of the precipitate (soluble\/insoluble) in (vi) to (x).<\/p>\nShort Questions<\/span><\/h3>\n
\nAnswer:<\/strong> Sodium hydroxide and ammonium hydroxide are used in analytical chemistry to precipitate insoluble metal hydroxide.<\/p>\n
\nAnswer:<\/strong> Zn2+<\/sup>.<\/p>\n
\nAnswer:<\/strong> Ammonium hydroxide.<\/p>\n
\n(i) Name the powdered metal added to sodium hydroxide solution.
\n(ii) Name the gas evolved.
\nAnswer:<\/strong> (i) Aluminium<\/a> (ii) Hydrogen (iii) Sodium aluminate, (NaAlO2<\/sub>).<\/p>\n
\n(i) Copper sulphate crystals (ii) Ferrous sulphate crystals
\n(iii) Ferric chloride crystals (iv) Lead nitrate crystals
\n(v) Zinc chloride crystals (vi) Calcium chloride
\n(vii) Zinc sulphate.
\nAnswer:<\/strong> (i) Blue (ii) Dull green (iii) Reddish brown
\n(iv) White (v) White (vi) White curdy
\n(vii) White gelatinous.<\/p>\n
\nA. Copper nitrate B. Iron (II) sulphate.
\nC. Iron (III) chloride D. Lead nitrate
\nE. Magnesium sulphate F. Zinc chloride.
\n(i) Which two solutions will give a white precipitate when treated with dilute Hydrochloric acid followed by Barium chloride solution ?
\n(ii) Which two solutions will give a white precipitate when treated with dilute Nitric acid followed by Silver nitrate solution ?
\n(iii) Which solution will give a white precipitate when either dilute Hydrochloric acid or dilute Sulphuric acid is added to it ?
\n(iv) Which solution becomes a deep \/inky blue colour when excess of Ammonium hydroxide is added to it ?
\n(v) Which solution gives a white precipitate with excess Ammonium hydroxide solution ?
\nAnswer:<\/strong> (i) B and E (Iron III sulphate and magnesium sulphate).
\n(ii) C and F (Iron III chloride and zinc chloride) (iii) D (lead nitrate)
\n(ii) A (copper nitrate) (v) F (Zinc chloride)<\/p>\n
\n(i) FeCl3<\/sub> (ii) Al2<\/sub>(SO4<\/sub>)3<\/sub>, (iii) ZnSO4<\/sub>\u00a0(iv) Pb(NO3<\/sub>)2<\/sub> (v) CuSO4<\/sub>.
\nAlso give balanced chemical equations.
\nAnswer:<\/strong> (i) A reddish brown ppt. of ferric hydroxide is obtained which is insoluble in excess of caustic soda solution.
\n
\n(ii) A gelatinous white ppt. of aluminium hydroxide is obtained which is soluble in excess of caustic soda solution.
\n
\n(iii) A gelatinous white ppt. of zinc hydroxide is obtained which is soluble in excess of caustic soda solution.
\n
\n(iv) A white ppt. of lead (II) hydroxide is obtained which is soluble in excess of caustic soda solution.
\n
\n(v)\u00a0A pie blue ppt. of copper (II) hydroxide is obtained which is insoluble in excess of caustic soda solution.
\n<\/p>\n
\n(ii) What are amphoteric oxides ? Why these oxides react with NaOH ?
\nAnswer:<\/strong> (i) Those metals which react with both alkalies as well as acids are called amphoteric metals<\/a> e.g., Zn, Sn, Al etc. They react with caustic alkalies like NaOH, KOH on heating and liberates H2<\/sub> gas. e.g.,
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\n(ii) Those oxides which react with both acids as well as bases are called amphoteric oxides. Oxides of amphoteric metals like Zn, Sn, Al, etc. react With strong alkalies like NaOH to form complex salt<\/a> and water, e.g.,
\n<\/p>\nFigure\/Table Based Questions<\/span><\/h3>\n