Hydration and Crystallization of Salts
Chemistry ⇒ Acids, Bases, and Salts
Hydration and Crystallization of Salts starts at 9 and continues till grade 12.
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See sample questions for grade 10
A sample of hydrated sodium carbonate (Na2CO3·xH2O) weighs 322 g. After heating, the anhydrous salt weighs 106 g. Calculate the value of x. (Na=23, C=12, O=16, H=1)
A student dissolves a salt in water and allows the solution to evaporate slowly. Crystals form. What is this process called?
A student heats a sample of hydrated magnesium sulfate and observes that it loses mass. What is the most likely explanation for this observation?
Calculate the percentage of water of crystallization in CuSO4·5H2O. (Cu=63.5, S=32, O=16, H=1)
Define water of crystallization.
Describe the process of crystallization of a salt from its solution.
Describe what happens when you heat hydrated iron(II) sulfate crystals.
Explain why anhydrous copper(II) sulfate is used as a test for water.
Explain why hydrated salts often have characteristic colors, while their anhydrous forms may be colorless or have different colors.
Explain why some salts do not form hydrates.
What is meant by a hydrated salt?
What is the chemical formula for gypsum, a hydrated salt?
What is the difference between a hydrated and an anhydrous salt?
What is the term used for salts that have lost all their water of crystallization?
