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Identify (A),(B),(C ),(D) and (E ), (A) ...

Identify (A),(B),(C ),(D) and (E ), (A) (black) `+ dil HCI overset(Delta) to (B)` (solution) `+` (C ) (gas) ( C) turns lead aceetain paper black , (B) gives orange ppt (D ) solution in excess of `KI` forming (E ).

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To identify the compounds (A), (B), (C), (D), and (E) based on the provided information, we can follow these steps: ### Step-by-Step Solution: 1. **Identify Compound A**: - The question states that (A) is black and reacts with dilute HCl when heated. - The black compound that fits this description is **Mercuric Sulfide (HgS)**. ...
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Identify A, B,C,D,E

Identify A, B, C, D, E

HgCl_(2) gives orange ppt , with (a) ___, which dissolves in excess of it forming (b) ____ called (c ) ____.

Salt (A) makes part of electrode and is insoluble in water (A) is blackened by NH_(3) forming (B),(B) is soluble is equa regia forming (C ),(C ) gives orange ppt with KI but ppt dissolves in extcess of KI forming (D ) , identify (A),(B),(C ) and (D)

Identify (A) to ( E) . (a) An inorganic iodide (A) on heating with a solution of KOH gives a gas (B) and the solution of a compound ( C) . (b) The gas (B) on ignition air gives a compound (D) and water. ( C) Copper sulphate is reduced to the metal on passing (B) through the solution. (d) A precipitate of the compound ( E) is formed on reaction of ( C) with copper sulphate solution.

Salts A, B, C, D & E undergo reactions i] to v] respectively. Identify the anion present in each salt.i] When AgNO_3 solution is added to a soln. of A, a white precipitate, insoluble in dilute nitric acid, is formed. ii] Addition of dil. HCl to B produces a gas which turns lead acetate paper black. iii] When a freshly prepared solution of FeSO_4 is added to a soln. of C and conc. H_2SO_4 is gently poured from the side of the test-tube, a brown ring is formed. iv] When dil. H_2SO_4 , is added to D a gas is produced which turns acidified K_2Cr_2O_7 soln. from orange to green v] Addition of dil. HCl to E produced an effervescence. The gas produced turns limewater milky but does not effect acidified K_2Cr_2O_7 soln.

Salts A, B, C, D and E undergo reactions (i) to (v) respectively. Identify the anion present in these salts on the basis of these reactions. Tabulate your answers in the format given below: (i) When silver nitrate solution is added to a solution of A, a white precipitate, insoluble in dilute nitric acid, is formed. (ii) Addition of dilute hydrochloric acid to B produces a gas which turns lead acetate paper black. (iii) When a freshly prepared solution of ferrous sulphate is added to a solution of C and concentrated sulphuric acid is gently poured from the side of the test-tube, a brown ring is formed. (iv) When dilute sulphuric acid is added to D a gas is produced which turns acidified potassium dichromate solution from orange to green. (v) Addition of dilute hydrochloric acid to E produces an effervescence. The gas produced turns lime water milky but does not affect acidified potassium dichromate solution.

Identify (A) + N_(2) overset(Delta) rarr (B) overset(H_(2) O) rarr underset("White ppt.") ((C)darr) (D)_((g)) White precipitate ( C) dissolves is NaOH solution the gas (D) gives white fumes with HCl .

Identify (A) to (D) in following steps and give chemical equations: (a) A white amorphous powder (A) on strongly heating gives a colourless noncombustible gas (B) and solid (C). (b) The gas (B) turns lime water milky and disappears with the passage of excess of gas. (c) The solution of (C) in dilute HCI gives a white precipitate with an aqueous solution of KdFeCN). (d). The solution of (A) gives white ppt. (D) on passing H_(2)S in presence of NH_(4) OH.

A sulphide ore (A) on roasting leaves a residue (B) . (B) on heating with chlorine gives (C ) , sulphide in water, addition of excess potassium iodide to a solution of (C ) gives a solution (D) A brown precipitate (E) is formed when a solution of ammonium sulphate is added to an alkaline a solution of (D) . Identify (A) to (E) .

CENGAGE CHEMISTRY ENGLISH-QUALITATIVE INORGANIC SALT ANALYSIS-Viva Voce Questions And Part-C (Analysis Of Cations)
  1. Identify (A),(B),(C ),(D) and (E ), (A) (black) + dil HCI overset(Delt...

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  2. Why is it necessary to prepare original solution for the detection of ...

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  3. Why do we not prefer to prepare original solution of cations in conc....

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  4. What is solubility product? Explain its importance in qualitative anal...

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  5. What is the basis of classification of cations into different group ?

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  6. Why are only Pb^(2+),Ag^(o+) and Hg(2)^(2+) ions precipitated in group...

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  7. Why is lead placed in group I as well in II?

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  8. Is it necessary to acidify a solution before group II cations are prec...

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  9. Give the reason for the formation of a light yellow or white ppt. in t...

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  10. Why do we Prefer HCl for preparing solution of cations?

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  11. Is it advisable to use conc. HCI in place of dilute HCI for preparing ...

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  12. Why is it essential to boil off H(2)S gas before proceeding to group I...

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  13. Can the solution be acidified with HNO(3) in group II before passing H...

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  14. What can it be, if the precipitate of group I is soluble in hot water ...

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  15. Why do we not prefer to prepare original solution of cations in conc....

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  16. Group I filtrate is made moderately acidic before proceeding to group ...

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  17. Why do we add excess of NH(4)Cl and NH(4)OH in the precipitation of gr...

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  18. Why do we add excess of NH(4)Cl and NH(4)OH in the precipitation of gr...

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  19. Why is it essential to oxidise ferrous salt to ferric salt in group II...

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  20. Can NH(4)Cl be replaced by any other ammonium salt for the precipitati...

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  21. How will you distinguish between ferrous and ferric salts?

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