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Question
Give one chemical test to distinguish between the following pair of compounds:
Zinc sulphate solution and Zinc chloride solution
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Solution
| Zinc sulphate | Zinc chloride |
|
Add BaCl2 solution to the above solution for white precipitates of BaSO4 + ZnCl2. \[\ce{ZnSO + BaCl -> BaSO4\downarrow + \underset{(White ppt)}{ZnCl2}}\] |
Add BaCl2 solution to the above solution; no effect is visualised. \[\ce{ZnCl2 + BaCl2 -> No visual effect}\] |
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RELATED QUESTIONS
Match the salts given in Column I with their method of preparation given in Column II.
| Column I | Column II | ||
| 1 | Pb(NO3)2 from PbO | A | Simple displacement |
| 2 | MgCl2 from Mg | B | Titration |
| 3 | FeCl3 from Fe | C | Neutralization |
| 4 | NaNO3 from NaOH | D | Precipitation |
| 5 | ZnCO3 from ZnSO4 | E | Combination |
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You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
- only copper hydroxide
- only zinc hydroxide
- both copper hydroxide and zinc hydroxide.
You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Only zinc hydroxide
The questions (i) to (v) refer to the following salt solutions listed A to F :
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B. Iron (II) sulphate
C. Iron (III) chloride
D. Lead nitrate
E. Magnesium sulphate
F. Zinc chloride
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(ii) Which two solutions will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
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(v) Which solution gives a white precipitate with excess ammonium hydroxide?
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When an ammonium salt is warmed with sodium hydroxide solution, a gas is evolved. State three ways in which you could identify this gas.
Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
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