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प्रश्न
Making use only of substances chosen from those given below:
(Dilute sulphuric acid, sodium carbonate, Zinc, sodium sulphite, Lead, calcium carbonate)
Give the equation for the reaction by which you could obtain zinc carbonate (two steps required).
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उत्तर
\[\ce{\underset{Zinc}{Zn}+\underset{Dil.sulphuric acid}{H2SO4}->\underset{Zinc sulphate}{ZnSO4} + H2\uparrow}\]
\[\ce{\underset{Zinc sulphate}{ZnSO4} + \underset{Sodium carbonate}{Na2CO3}-> \underset{Zinc carbonate}{ZnCO3}+\underset{Sodium sulphate}{Na2SO4}}\]
संबंधित प्रश्न
Name the kind of particles present in carbonic acid.
Name the ions furnished by bases in solution.
Name the ions furnished by a weak alkali.
Name the ions furnished by : a weak alkali
Give one example : Basic oxide which is soluble in water.
Give one example : A hydroxide which is insoluble in water.
The preparation of lead sulphate from lead carbonate is a two step process (lead sulphate cannot be prepared by adding dilute sulphuric acid to lead carbonate)
Why is the direct addition of dilute sulphuric acid to lead carbonate an impractical method of preparing lead sulphate?
Fill in the blank from the choices given in bracket.
When a metallic oxide is dissolved in water, the solution formed has a high concentration of ___________ ions. (H+,H3O+,OH-)
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:
Lead chloride.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
B is an insoluble salt.
