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प्रश्न
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid Na2CO3 .10H2O
उत्तर
Mass decreases due to efflorescence.
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संबंधित प्रश्न
From the list of the following salts choose the salt that most appropriately fits the description is given in the following:
[AgCl, MgCl2, NaHSO4, PbCO3, ZnCO3, KNO3, Ca(NO3)2]
A deliquescent salt
Give four substances which contain water of crystallization and write their common names.
Explain clearly how conc, H2SO4 is used as dehydrating as well as drying agent.
Give reason for the following:
Anhydrous calcium chloride is used in a desiccator.
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Conc. Sulphuric acid
Name the salt which on hydrolysis forms acidic. Give a balanced equation for the following reaction.
Give examples of efflorescence.
Answer the question below:
Why hydrated copper sulphate turns white on heating.
Name the salt which on hydrolysis forms neutral solution. Give a balanced equation for each reaction.
Give a suitable chemical term for:
A definte number of water molecules bound to some salts.
