Dehydration of hydrates of halides of calcium, barium and strontium i.e., CaCl26H2O, BaCl2.2H2O, SrCl2.2H2O, can be achieved by heating. These become wet on keeping in air. Which of the following statements is correct about these halides?
(i) Act as dehydrating agent
(ii) Can absorb moisture from air
(iii) Tendency to form hydrate decreases from calcium to barium
(iv) All of the above
Dehydration of hydrates of halides of calcium, barium and strontium i.e., CaCl26H2O, BaCl2.2H2O, SrCl2.2H2O, can be achieved by heating. These become wet on keeping in air. Which of the following statements is correct about these halides?
(i) Act as dehydrating agent
(ii) Can absorb moisture from air
(iii) Tendency to form hydrate decreases from calcium to barium
(iv) All of the above
-
1 Answer
-
This is a multiple choice type question as classified in NCERT Exemplar
Correct option (iv)
Chlorides of alkaline earth metals are hydrated salts. They can be used as dehydrating agents due to their hygroscopic nature to absorb moisture from air. Extent of hydration decreases from Mg to Ba.
Therefore, dehydration of hydrates of halides of calcium, barium and strontium i.e., CaCl2.6H2O, BaCl2.2H2O, SrCl2.2H2O can be achieved by heating.
Similar Questions for you
Li+ has the highest hydration enthalpy.
Hence it is most hydrated
Therefore, Correct order of hydrated radii is Cs+ < Rb+ < K+ < Na+ < Li+
Sodium carbonate is a white crystalline solid which exists as a decahydrate, 
Suspension of slaked lime in water is known as milk of lime
Crude sodium chloride obtained by crystallisation of brine solution contains CaSO4, Na2SO4 and MgCl2
Beryllium salts are easily hydrolysed
Gypsum : CaSO4 * 2H2O
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 688k Reviews
- 1800k Answers