Mohr s salt

Mohr s salt, (NH4)2S04 FeS04,6H20. Iron ammonium sulphate. 

Mohr s salt, see Ammonium iron(H) sulfate 6-water... 

Ferrous ammonium suifate, Mohr s salt, FeS04 (NH4)2S04 6H2O—0.5N 196 g per liter. Ferrous sulfate, FeS04 7H2O—0.5N 80 g per liter add a few drops of H2SO4. 

Iron(II) sulfate forms double salts of formula M2SO4 FeSO 6H20 with aLkaU sulfates. Iron(II) ammonium sulfate [7783-85-9] (Mohr s salt),... 

Chemical Designations - Synonyms Ammonium ferrous sulfate. Ammonium iron sulfate. Ferrous ammonium sulfate hexahydrate. Iron ammonium sulfate, Mohr s salt Chemical Formula Fe(NH4)j(S04)j 6Hj0. 

The possibility of oxidation to Fe is a crucial theme in the chemistry of Fe and most of its salts are unstable with respect to aerial oxidation, though double sulfates are much less so (e.g. Mohr s salt above). However, the susceptibility of Fe to oxidation is dependent on the nature of the ligands attached to it and, in aqueous solution, on the pH. Thus the solid hydroxide and alkaline solutions are very readily oxidized whereas acid solutions are much more stable (see Panel opposite). 

Mohrsches Salz. Mohr s salt (ammonium ferrous sulfate). 

Consider the standardization of a solution of KI04 with Mohr s salt (see problem 70) according to the following ... 

What is the exact molarity of the solution if 1.8976 g of Mohr s salt was exactly reacted with 24.22 mL of the solution ... 

Procedure Weigh accurately about 4.9 g of pure sample of Mohr s salt and transfer it to a 250 ml volumetric flask. Add 20 ml of dilute sulphuric acid and make up the volume to the mark with DW and finally mix the contents of the flask thoroughly. 

Calculations The quantity of Mohr s salt required for 250 ml of the solution having a normality of... 

Procedure Transfer 20 ml of the primary standard solution (Mohr s salt) to the titration flask and add 20 ml of 2 N sulphuric acid. Take the potassium dichromate solution in the burette. Put drops of freshly... 

By applying the relationship between NjVj (K2Cr207) and N2V2 (Mohr s salt), the normality of the former may be calculated. 

J) Preparation of 0.1 N K2Cr207 solution 1 L (ii) Standardization of 0.1 N K2Cr207 solution using Mohr s salt. 

Mohr s salt See ferrous ammonium sulfate. morz, s6lt ... 

Using this water, dissolve several crystals of Mohr s salt (what is its composition ) in a test tube, acidify the solution with sulphuric acid, and put a few pieces of iron into it (for what purpose ). Prepare a sodium hydroxide solution in another test tube. By adding the alkali solution to that of the Mohr s salt, prepare a precipitate of iron(II) hydroxide. What is its colour What happens to it in the air Write the equations of the reactions. 

Preparation of Mohr s Salt. Perjorm the experiment in a jume cupboard ) Put one gramme of a finely cut iron wire into a flask and dissolve it with heating in the calculated amount of 2 A sulphuric acid. Insert a funnel into the neck of the flask (for what purpose ). Keep the volume of the solution constant. After dissolving the metal, filter the solution and evaporate it until a crystalline film begins to form on its surface. What substance is in the solution ... 

Properties of Iron(II) Salts. 1. Test a solution of Mohr s salt with an indicator. Write the equation of the iron(II) sulphate hydrolysis reaction. Pour in a sodium carbonate solution. What do you observe Write the equation of the reaction and explain the results obtained. 

Pour a potassium hexacyanoferrate(III) (potassium ferricyanide) solution into a Mohr s salt one. What is obtained Write the equation of the reaction. What is this reaction used for ... 

What conclusions on the properties of iron (II) salts can be made from the above experiments Why should freshly prepared Mohr s salt be used as the starting substance when studying the properties of iron (I I) compounds ... 

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