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Question
The following is a list of methods for the preparation of salts.
A - direct combination of two elements
B - reaction of a dilute acid with a metal.
C - reaction of a dilute acid with an insoluble base.
D - titration of a dilute acid with a solution of soluble base.
E - reaction of two solutions of salts to form a precipitate.
Choose from the above list A to E, the best method for preparing the following salts by giving a suitable equation in each case:
- Anhydrous ferric chloride,
- Lead chloride,
- Sodium sulphate,
- Copper sulphate.
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Solution
- The best method of preparing anhydrous ferric chloride is the method A - direct combination of two elements.
\[\ce{2Fe + 3Cl2 ->[\Delta]\underset{Anhydrous ferric chloride}{2FeCl3}}\] - The best method of preparing lead chloride is the method A - direct combination of two elements.
\[\ce{Pb + Cl2 -> \underset{Lead chloride}{PbCl2}}\] - The best method of preparing sodium sulphate is the method D - titration of a dilute acid with a solution of soluble base.
\[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2\uparrow}\]
\[\ce{Na2SO4 + 10H2O -> Na2SO4.10H2O}\] - The best method of preparing copper sulphate is the method C - reaction of a dilute acid with an insoluble base.
\[\ce{Cu(OH)2 + H2SO4 -> CuSO4 + 2H2O}\]
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RELATED QUESTIONS
Name the procedure used to prepare a sodium salt such as sodium sulphate.
How is the following salt prepared:
Lead carbonate from lead nitrate.
Describe giving all practical details, how would you prepare:
lead sulphate from metallic lead.
Give the preparation of the salt shown in the left column by matching with the methods given in the right column. Write a balanced equation for each preparation.
| Salt | Method of preparation |
| Zinc Sulphate | Precipitation |
| Ferrous sulphide | Oxidation |
| Barium Sulphate | Displacement |
| Ferric sulphate | Neutralisation |
| Sodium sulphate | Synthesis |
State how would you prepare copper (II) oxide from
Copper nitrate
State how would you prepare copper (II) oxide from
Copper Carbonate
Choosing the correct words given in brackets, complete the sentence given below: Copper sulphate from copper.
Which of the following methods, (a), (b), (c), (d) or (e) is generally used for preparing the chlorides listed below from (i) to (v). Answer by writing down the chloride and the letter pertaining to the corresponding method. Each letter is to be used only once.
(a) Action of an acid on a metal.
(b) Action of an acid on an oxide or carbonate.
(c) Direct combination.
(d) Neutralization of an alkali by an acid.
(e) Precipitation (double decomposition).
(i) copper(II) chloride.
(ii) iron(II) chloride.
(iii) iron(IIl) chloride.
(iv) lead (II) chloride.
(v) sodium chloride.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
- A is a sodium salt.
- B is an insoluble salt.
- C is a soluble salt of copper.
- D is a soluble salt of zinc.
Select the word/s given which are required to correctly complete the blanks.
When solution M and O are mixed together, the products will be ______ and ______.
