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प्रश्न
Name a substance which changes the blue colour of copper sulphate crystals to white.
उत्तर
Conc. sulphuric acid.
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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
Distinguish between drying and dehydrating agent.
Explain clearly how conc, H2SO4 is used as dehydrating as well as drying agent.
Give reason for the following:
Sodium hydrogen sulphate is not an acid but it dissolves in water to give hydrogen ions, according to the equation
\[\ce{NaHSO4 <=> H+ + Na+ + SO^2-_4}\]
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid CaCI2
Name two crystalline substances which do not contain water of crystallization.
What happen to the crystals of washing soda when exposed to air? Name the phenomenon exhibited.
Name the salt which on hydrolysis forms acidic. Give a balanced equation for the following reaction.
Give examples of deliquescence.
Answer the question below:
What name is given to the water in the compound copper sulphate-5-water?
