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प्रश्न
Give equation to prepare the following as directed
MgCO3 from MgCl2
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उत्तर
\[\ce{MgCI2 + Ca(OH)2 -> Mg(OH)2 + CaCI2}\]
\[\ce{Mg(OH)2 + 2CO2 -> Mg(HCO3)2}\]
\[\ce{Mg(HCO3)2 -> MgCO3 + CO2 + H2O}\]
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संबंधित प्रश्न
What kind of salt prepared by direct combination. Write an equation for the reaction that takes place in preparing the salt you have named.
Name the procedure used to prepare a sodium salt such as sodium sulphate.
How is the following salt prepared:
Sodium nitrate from sodium hydroxide.
Some methods used for the laboratory preparation of salts are:
(a) Metal + acid
(b) Carbonate + acid
(c) Precipitation
(d) Direct combination
(e) Titration
Copy and complete the following table :
| Salt | Method of Preparation |
| Ammonium Sulphate | |
| Calcium carbonate | |
| Iron (III) chloride | |
| Lead nitrate | |
| Zinc sulphate |
Write the balanced equation for the preparation of the following compounds, starting from iron and other substance:
Iron (II) sulphide
Write the equation for the laboratory preparation of sodium sulphate using dilute sulphuric acid.
Carbon dioxide and sulphur dioxide gas can be distinguished by using ______.
Give the equation for the preparation of the following salt from the starting material given.
Copper sulphate from copper (II) oxide
From the list given below, select the word(s) required to correctly complete blanks (i) to (v) in the following passage. The words from the list are to be used only once. Write the answers as (a) (i), (ii) (iii) and so on. Do not copy the passage.
A solution M turns blue litmus red, so it must contain _______ ions; another, solution O turns red litmus blue and hence, must contain ______ ions.
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 of preparing the following salt by giving a suitable equation in the following case:
Copper sulphate.
