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Question
Name a double salt.
Solution 1
Potash alum
Solution 2
Mohr's salt FeSO4.(NH4)2SO4.6H2O
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RELATED QUESTIONS
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Lead sulphate from lead carbonate
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Identify the odd one out and justify.
Macth the following.
| Column A | Column B |
| 1. Acid salt | a. Sodium potassium carbonate |
| 2. Mixed salt | b. Alum |
| 3. Complex salt | c. Sodium Carbonate |
| 4. Double salt | d. Sodium zincate |
|
5. Normal salt |
e. Sodium hydrogen carbonate |
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 asolution 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, 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 limewater milky but does not affect acidified potassium dichromate solution.
| Salt | Anion |
| A | |
| B | |
| C | |
| D | |
| E |
From the formula listed below, choose one, in the following case, corresponding to the salt having the given description:
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4.7H2O.
This salt gives nitrogen dioxide on heating.
Give a suitable chemical term for:
A salt formed by incomplete neutralisation of an acid by a base.
