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1. Chemistry Project– Mohr’s Salt STUDENT NAME: SOMANSH KALRA REGN. NO. 2085 SEMESTER: 1 St COURSE : B’TECH INTEGRATED GUIDEED BY : Ms. Vijaylaxmi Verma INSTITUTE SCHOOL OF AERONAUTICS

2. CONENTS: Abstract and Theory-Preparation Materials Required-   Apparatus-Chemical  Preparation of standard solution of Mohr’s Salt- Procedure& Observation Result Health Hazard Conclusion Bibliography PROJECT – Mohr’s Salt <Chemistry>

3. PROJECT OVER VIEW: DEFINITION – Brief Description about Project . OBJECTIVE: MAKING OF MOHR’s SALT MATERIALS TO BE USED : Lab Apratus Required Chemical 4. PROCEDURE : How to Prepare Mohr’s Salt

4. Mohr’s Salt :- Mohr's salt or ammonium ferrous sulphate is the inorganic compound with the formula (NH4)2Fe(SO4)2.6H2O containing two different cations Fe2+ and NH4+. Itis classified as a double salt of ferrous sulphate and ammonium sulphate. It is a common laboratory reagent. Like the other ferrous sulphale salts ferrous ammonium sulphate dissolves in water to give the aquo complex which has octahedral molecular geometry. Mohr's salt has a molar mass of 392.21 g/ moland it appears as a blue green solids DEFINITION

5. PREPARATION: Mohr's salt is prepared by dissolving an equimolar mixture of hydrated ferrous sulphate and ammonium sulphate in water containing a little of sulphuric acid and the crystallization from the solution. On crystallization light green crystals of ferrous ammonium; sulphate separate out. Ferrous sulphate FeSO4.7H2O Ammonium sulphate (NH4)2 SO4 Mohr's Salt FeSO4-(NH4)2SO4.6HO

6.   Two beakers china dish funnel funnel stand glass rod wash bottle Tripode stand W ire gauze F errous sulphate crystals A mmonium sulphate crystals D ilute sulphate crystals Dilute sulphuric acid and Ethyl alcohol MATERIAL REQUIRED:

7. BUDGET: Item Description Price (Rs) Two beakers 100.00 china dish 1 00.00 funnel 70.00 funnel stand 80.00 glass rod 80.00 wash bottle 50.00 Tripode stand 190.00 W ire gauze 60.00 F errous sulphate crystals 50.00 A mmonium sulphate 50.00 D ilute sulphate crystals 50.00 Dilute sulphuric acid and Ethyl alcohol 50.00 TOTAL 880.00

8. REQUIRED CONTENT: 100 0ml of the decinormal solution of Mohr's salt is prepared by weighing accurately accrual 3.92of A.R. quality crystals, dissolving in water to which 40ml of dilute sulphuric acid had been added (to prevent hydrolysis) and making up the solution in a standard measuring flask. The solution is well shaken. Experimentally, it has been found that the mass of Mohr's salt prepared is 8.19 Take a clean 250ml beaker, transfer 7g FeSO4 and 3.5g (NH4)2SO4 crystals to it. Add 2.3 ml dilute H2SO4 (to prevent hydrolysis)  In another beaker boil 20 ml H2O for 5 minutes (to expand air) Add boiling hot H2O to the content in small quantities. Stir until salts have completely d issolved 4. Filter it and heat the filtrate in a china dish till it concentrate to crystallization point 5. Place the china dish over the beaker full of cold H20,cool it and collect the crystals Working Procedure:

9. OBSERVATION : RESULT: Weight = 18.6g Colour = pale green The ammonium ions make solutions of Mohr's salt slightly acidic, which slows this oxidation process. It is also used to print in print edition coating in order to extend the life of the word version. Also it had been used in medicine, electroplating and so on

10. 5/9 Bibliography  - • Practical chemistry, B.Sc Main By A.Q. Thomas   • https://byjus.com/chemistry/preparation-of-ferrous-ammonium-sulphate/ www.yahoo.com

11. Thanks