Advertisements
Advertisements
Question
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?
Options
Act as dehydrating agent.
Can absorb moisture from air.
Tendency to form hydrate decreases from calcium to barium.
All of the above.
Advertisements
Solution
All of the above.
Explanation:
Chlorides of alkaline earth metals are hydrated salts. Due to their hygroscopic nature, they can be used as dehydrating agents to absorb moisture from air.
Extent of hydration decreases from Mg to Ba, i.e., MgCl2.6H2O, CaCl2.6H2O, BaCl2 2H2O, SrCl2.2H2O.
APPEARS IN
RELATED QUESTIONS
Describe two important uses of the following quicklime.
Describe the importance of the limestone.
Describe the importance of the cement.
Describe the importance of the plaster of paris.
Dead burnt plaster is ______.
Suspension of slaked lime in water is known as ______.
A substance which gives brick red flame and breaks down on heating to give oxygen and a brown gas is ______.
Which of the following statements is true about Ca(OH)2?
Several sodium compounds find use in industries. Which of the following compounds are used for textile industry?
(i) Na2CO3
(ii) NaHCO3
(iii) NaOH
(iv) NaCl
A substance absorbs \[\ce{CO2}\] and violently reacts with water. That substance is ______.
The conversion of hydroxyapatite occurs due to presence of p - ions in water. The correct formula of hydroxyapatite is ______.
\[\ce{Y <-[\Delta, 205°C] CaSO4.2H2O ->[\Delta, 120°C] X}\]
X and Y are respectively:
The commercial name for calcium oxide is ______.
In curing cement plasters, water is sprinkled from time to time. This helps in ______.
Which of the following on thermal decomposition yields a basic as well as acidic oxide?
