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प्रश्न
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
उत्तर
When washing soda (Na2CO3.10H2O) is exposed to air, it loses 9 molecules of water to form a monohydrate.
\[\ce{Na2CO1.10H2O ->[air] Na2CO1.H2O + 9H2O}\]
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संबंधित प्रश्न
The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation. List its two uses.
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CuSO4.5H2O or CuSO4
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What is a salt?
The salt whose aqueous solution will have no effect on either red litmus or blue litmus is
(a) potassium sulphate
(b) sodium carbonate
(c) ammonium sulphate
(d) sodium acetate
A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. Explain the phenomenon.
Taking sodium carbonate as an example, give the meaning of the following terms: Water of crystallization.
Answer the following questions below, relating your answers only to salts in the following list:
Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water.
(i) What is the name given to the water in the compound copper sulphate-5-water?
(ii) If copper sulphate-5-water is heated, the water is driven off leaving anhydrous copper sulphate. What is the colour of anhydrous copper sulphate?
(iii) By what means, other than heating, you can dehydrate copper sulphate-5-water and obtain anhydrous copper sulphate?
(iv) Which one of the salts in the given list is deliquescent?
Write any five uses of salts.
Salt is ______ in nature.
