Solid FeSO4 easily absorb water.
baking soda
FeSO4+BaCl2=>FeCl2+BaSO4
You swirl the liquids in volumetric flasks to mix them.
because,starch undergoes a photochemical reaction. So, with the passage of time it can under go to the photochemical reaction and starch wouldnot be starch but it might have changed in anyother product. so...we should use freshly prepared starch.
that's what i want answered
Brown ring test: NO2- + H+ = NO NO + FeSO4 = [Fe(NO)]SO4
Fehling's solution must be freshly prepared because there is a tendency for it to oxidize if not used right away
Because in FeSO4, iron present in +2 oxidation state but the stable oxidation state is +3. The Fe(II) get oxidized into Fe(III) in ferrous sulfate solution that's why preparation of solution must necessary.
baking soda
The solution of CuSO4 is blue.The solution of FeSO4 is green.
why sodium thiosulfate to be prepared in hot water only
FeSO4+BaCl2=>FeCl2+BaSO4
You swirl the liquids in volumetric flasks to mix them.
A grayish coating is formed.
because,starch undergoes a photochemical reaction. So, with the passage of time it can under go to the photochemical reaction and starch wouldnot be starch but it might have changed in anyother product. so...we should use freshly prepared starch.
Equivalent weight of under lined species. feSo4
Benzidine reagent is used to test blood in urine. It needs to be freshly prepared in order to obtain best results, otherwise, possible contamination may occur.