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प्रश्न
Give equation to prepare the following as directed
NaHCO3 from Na2CO3
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उत्तर
\[\ce{Na2CO3 + CO2 + H2O -> 2NaHCO3}\]
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संबंधित प्रश्न
You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare iron (III) chloride.
State how would you prepare copper (II) oxide from
Copper nitrate
Define the following term:
Neutralisation
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.
State the inference drawn from the following observation:
Salt S is prepared by reacting dilute sulphuric acid with copper oxide Identify S.
What is the difference between the chemical nature of an aqueous solution of HCl and an aqueous solution of NH3
Fill in the blanks with suitable words:
An acid is a compound which when dissolved in water forms hydronium ions as the only ______ ions. A base is a compound which is soluble in water and contains ______ ions. A base reacts with an acid to form a ______ and water only. This type of reaction is known as ______.
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
A covalent oxide of a metalloid.
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.
You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare sodium sulphate.
