Advertisements
Advertisements
प्रश्न
Explain the following observation:
Why is fused calcium chloride or cone, sulphuric acid used in a desiccator?
Advertisements
उत्तर
Anhydrous or fused calcium chloride is highly hygroscopic in nature it readily absorbs moisture, also it is deliquescent in nature and is therefore used as a drying agent in a desiccator.
Concentrated sulphuric acid being hygroscopic in nature absorbs moisture from the air and gets diluted and acts as a drying agent as well as a dehydrating agent and hence is used in a desiccator.
APPEARS IN
संबंधित प्रश्न
Give two examples of Crystalline anhydrous substances.
Give two examples for Deliquescent substance.
Water turns the colour of anhydrous copper sulphate .................
The sticky substance formed when soap is added to hard water is ______.
Give one word for the following statement:
A substance which does not contain water .
Complete the statement by filling the blank with the correct word from the option.
Hygroscopic substance absorb moisture from the atmosphere & _______their original state.
Select the correct word from the words in option to complete the sentence:
Efflorescence occurs when the vapour pressure of the hydrated crystals is ____ than the vapour pressure of the atmospheric humidity.
Differentiate between the following:
Deliquescent salt and hygroscopic salt
The molecular formula of green vitriol is MgSO4.7H2O.
'A' is a blue coloured crystalline salt. On heating, it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.
