What is the valency factor of Mohr's salt \([FeSO_{4}(NH_{4})_{2}SO_{4}.6H_{2}\)O is [Mohr's salt as reducing agent ]

The oxidation number of S in Mohr's salt [ FeSO_4(NH_4)_2SO_4*6H_2O ] is -

The equivalent weight of Mohr 's salt FeSO_(4) . (NH_(4))_(2)SO_(4) . 6H_(2)O in redox change is equal to its

In the reaction of Mohr's salt [FeSO_4(NH_4)_2SO_4.6H_2O] with oxalate ions in the presence of H_2O_2 and H^(o+) ions, [Fe(C_2O_4)_3]^(3-) ion is formed. Calculate the minimum mass of Mohr's salt and K_2C_2O_4 required to prepare 10 g of K_3Fe(C_2O_4)_2 .

The equivalent weight of salt KHC_(2)O_(4).H_(2)C_(2)O_(4).4H_(2)O when used as reducing agent :-

KMnO_4 is prepared from the mineral pyrolusite, MnO_2 (deep purple colour). It acts as an oxidising agent in the neutral, alkaline as well as acidic medium in acidic medium it is used in volumetric analysis for estimation of Fe^(2+) , Cr_2O_4^(2-) salts etc. The titrations are carried out in presence of H_2SO_4 . However, before using it as a titrant, it is first standardised with standard oxalic acid solution or Mohr's salt solution . In one of the experiments on titration 26.8g of dry pure sodium oxalate (Mw=123gmol^-1) was dissolved in 1L of distilled water and then 100 mL of 2MH_2SO_4 were added. The solution was cooled. Now to this solution 0.1MKMnO_4 solution was added till a very faint pink colour persisted. Q. Mohr's salt, FeSO_4(NH_4)_2SO_46H_2O , is preffered over FeSO_4.7H_2O for standardisation of KMnO_4 solution because.

Find the valence factor for following salts : (i) K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O " " (ii) CaCO_(3)

Assertion In aqueous solution Mohr' s salt gives NH_(4)^(o+)Fe^(2+) and SO_(4)^(2-) ions Reason Mohr' s salt is a double salt .