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प्रश्न
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
उत्तर
A hot saturated solution of CuSO4 forms crystal as it cools. Because on cooling the water molecules move closer together and there is less space for the solution to hold on to as much of the dissolved solid and so it forms crystals.
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संबंधित प्रश्न
Define water of crystallization. Give two examples with formulae.
Give one word for the following statement:
A substance which does not contain water .
What are drying or desiccating agents? Give examples.
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes that occur when hydrated copper sulphate is heated.
Select the correct answer from the choice given in the options.
An anhydrous crystal _____.
Give a reason for the following:
Heating a hydrated copper sulphate crystal is deemed a chemical change.
Name or state the following:
A liquid hydroscopic substance.
The molecular formula of green vitriol is MgSO4.7H2O.
Define Hydrated salt.
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
