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प्रश्न
State one appropriate observation of the following:
Concentrated sulphuric acid is added dropwise to a crystal of hydrated copper sulphate.
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उत्तर
When conc. H2SO4 is added to a crystal of hydrated copper sulphate, it removes water of crystallisation from salt.
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संबंधित प्रश्न
Write balanced chemical equations to show : The oxidizing action of conc. Sulphuric acid on carbon
Identify the acid in the following case:
The acid which produces sugar charcoal from sugar.
State the inference drawn from the following observations:
Salt S is prepared by reacting dilute sulphuric acid with copper oxide. Identify S.
Name the products formed when hot and concentrated sulphuric acid reacts with Copper.
Name the Following:
The property used to prepare HCl and HNO3 from H2SO4.
Give reason for the following:
Concentrated sulphuric acid should not be added to oxalic acid or formic acid in the open laboratory.
Name the anion [negative ion] present in the following compound:
Compound D when warmed with dilute H2SO4 gives a gas which turns acidified potassium dichromate solution green.
The following statement is correct only under certain conditions. Rewrite the statement including the appropriate conditions.
Oxalic acid reacts with sulphuric acid to produce carbon monoxide and carbon dioxide.
State two observations when
A few crystals of KNO3 are heated in a hard glass tube
Give balanced chemical equation to prepare the following salt:
Lead sulphate from lead carbonate
