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.

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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.

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.

Which of the following hydrated salts contains the greatest percentage by mass of water? (1) CuSO₄·5H₂O (2) MgSO₄·7H₂O (3) Na₂CO₃·10H₂O (4) FeSO₄·7H₂O

Which of the following is NOT a hydrated salt? (1) Na₂CO₃·10H₂O (2) CuSO₄·5H₂O (3) CaCl₂ (4) FeSO₄·7H₂O

Which of the following is the correct definition of a hydrated salt? (1) A salt that contains water molecules within its crystal structure. (2) A salt that is dissolved in water. (3) A salt that is wet. (4) A salt that is anhydrous.

Which of the following is the correct formula for hydrated iron(II) sulfate? (1) FeSO₄·5H₂O (2) FeSO₄·7H₂O (3) FeSO₄·10H₂O (4) FeSO₄·2H₂O

Fill in the blank: The chemical formula for hydrated sodium sulfate is Na₂SO₄·______H₂O.

Fill in the blank: The empirical formula of a hydrated salt is determined by finding the ratio of moles of ________ to moles of anhydrous salt.

Fill in the blank: The formula for hydrated copper(II) sulfate is CuSO₄·______H₂O.

Fill in the blank: The process of determining the number of water molecules in a hydrated salt is called ________ analysis.

True or False: The formula of a hydrated salt can be determined by measuring the mass lost upon heating and the mass of the anhydrous salt.

True or False: The mass of water of crystallization can be calculated by subtracting the mass of the anhydrous salt from the mass of the hydrated salt.

True or False: The number of water molecules in a hydrated salt can be a non-integer value.

True or False: The water of crystallization can be removed by heating the hydrated salt.