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प्रश्न
Write a balanced equation for the preparation of the following salts:
Zinc carbonate from Zinc sulphate
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उत्तर
`ZnSO_4 + Na_2CO_3 -> Na_2SO_4+ZnCO_3`
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संबंधित प्रश्न
Write a balanced chemical equation for Action of dilute hydrochloric acid on magnesium sulphite.
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
Which of the following salt has a blue colour and why?
CuSO4.5H2O or CuSO4
Name the major salt present in sea-water.
How is common salt obtained from sea-water?
What is a salt?
Which of the following salts will give an aqueous solution having pH of almost 7?
Give one example of a salt which gives an aqueous solution having:
pH less than 7
The Salt Story
From: The New Indian Express 9 March 2021
The salt pans in Marakkanam, a port town about 120 km from Chennai are the third largest producer of salt in Tamil Nadu. Separation of salt from water is a laborious process and the salt obtained is used as raw materials for manufacture of various sodium compounds.
One such compound is Sodium hydrogen carbonate, used in baking, as an antacid and in soda acid fire extinguishers.
The table shows the mass of various compounds obtained when 1litre of sea water is evaporated.
| COMPOUND | FORMULA | MASS OF SOLID PRESENT /g |
| Sodium Chloride | NaCl | 28.0 |
| Magnesium Chloride | MgCl2 | 8.0 |
| Magnesium Sulphate | MgSO4 | 6.0 |
| Calcium Sulphate | CaSO4 | 2.0 |
| Calcium Carbonate | CaCO3 | 1.0 |
| TOTAL AMOUNT OF SALT OBTAINED | 45.0 | |
How many grams of Magnesium Sulphate are present in 135g of solid left by evaporation of sea water?
Name the salt formed when sulphuric acid is added to sodium hydroxide and write its pH.
