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Hydration and Water of Crystallization Calculations

Chemistry ⇒ Stoichiometry and Chemical Calculations

Hydration and Water of Crystallization Calculations starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Hydration and Water of Crystallization Calculations. 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 11
A 2.50 g sample of hydrated iron(II) sulfate, FeSO4·xH2O, is heated to give 1.36 g of anhydrous FeSO4. Calculate the value of x.
A 3.00 g sample of hydrated calcium chloride, CaCl2·xH2O, is heated to give 1.65 g of anhydrous CaCl2. Calculate the value of x.
A 5.00 g sample of hydrated sodium carbonate, Na2CO3·xH2O, is heated to constant mass. The mass of the residue is 1.86 g. Calculate the value of x.
A 6.25 g sample of hydrated sodium carbonate, Na2CO3·xH2O, is heated to give 2.12 g of anhydrous Na2CO3. Calculate the value of x.
A 7.50 g sample of hydrated magnesium sulfate, MgSO4·xH2O, is heated to give 3.65 g of anhydrous MgSO4. Calculate the value of x.
A 8.20 g sample of hydrated sodium sulfate, Na2SO4·xH2O, is heated to give 3.62 g of anhydrous Na2SO4. Calculate the value of x.
A hydrated salt has the formula CaSO4·xH2O. If 6.80 g of the hydrated salt yields 5.44 g of anhydrous CaSO4 after heating, what is the value of x?
A hydrated salt has the formula FeSO4·xH2O. If 4.90 g of the hydrated salt gives 2.70 g of anhydrous FeSO4 after heating, what is the value of x?
A sample of hydrated copper(II) sulfate, CuSO4·xH2O, has a mass of 3.20 g. After heating, the mass of the anhydrous salt is 2.05 g. Calculate the value of x.
A student heats 4.50 g of hydrated barium chloride, BaCl2·xH2O, and obtains 3.00 g of anhydrous BaCl2. Calculate the value of x.
Describe the difference between a hydrated and an anhydrous salt.
Describe the steps required to determine the number of water molecules of crystallization in a hydrated salt experimentally.
Explain why heating a hydrated salt causes a change in mass.
Explain why the color of copper(II) sulfate changes from blue to white upon heating.
What is meant by the term 'water of crystallization' in a hydrated salt?