Hydration and Crystallization of Salts
Chemistry ⇒ Acids, Bases, and Salts
Hydration and Crystallization of Salts starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Hydration and Crystallization of Salts.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
Describe how you would obtain pure crystals of copper(II) sulfate from its solution.
Describe the process of crystallization.
Describe what happens when hydrated copper(II) sulfate is exposed to air for a long time.
Explain the difference between a hydrated and an anhydrous salt.
Explain why hydrated salts are important in chemical analysis.
Explain why hydrated salts often have bright colors, while their anhydrous forms are usually white or pale.
A sample of hydrated magnesium sulfate (MgSO4·7H2O) weighs 12.0 g. After heating, the residue weighs 5.9 g. Calculate the mass of water lost.
A student heats 5 g of hydrated copper(II) sulfate (CuSO4·5H2O) and obtains 3.2 g of anhydrous copper(II) sulfate. How much water was lost during heating?
Which of the following is a deliquescent salt?
(1) NaCl
(2) CaCl2
(3) KNO3
(4) Na2SO4
Which of the following is an example of a hydrated salt?
(1) Sodium chloride
(2) Copper(II) sulfate pentahydrate
(3) Potassium nitrate
(4) Calcium oxide
Which of the following is NOT a hydrated salt?
(1) Na2SO4·10H2O
(2) KAl(SO4)2·12H2O
(3) NaCl
(4) FeSO4·7H2O
Which of the following is the correct formula for Epsom salt?
(1) MgSO4·7H2O
(2) MgSO4·5H2O
(3) MgSO4·10H2O
(4) MgSO4
Fill in the blank: Glauber's salt is the common name for Na2SO4·__________H2O.
Fill in the blank: The formula for gypsum is CaSO4·__________H2O.
Fill in the blank: The hydrated form of magnesium sulfate is called __________.
Fill in the blank: The hydrated form of sodium carbonate is called __________.
True or False: All salts can form hydrates.
True or False: Anhydrous copper(II) sulfate can be used to test for the presence of water.
True or False: Anhydrous salts contain water of crystallization.
True or False: Blue vitriol is the common name for hydrated copper(II) sulfate.
