Лаборатория иши №5

CONTENTS

1. 
   Introduction ………………………………………………………………………… 5
   
2. 
   Safety rules when working in a chemical laboratory ............. 6
   
3. 
   Absorption of hydrogen chloride, production of hydrochloric acid ……………….… ...... 12
   
4. 
   Etherification of acetic acid ................................ ……………………… 17
   
5. 
   Production of extraction phosphate acid from phosphate raw materials …… ....... 21
   
6. 
   Production of nitrogen fertilizers and determination of nitrogen content in fertilizers by formaldehyde method ………………………………………… .. …… ..23
   
7. 
   Obtaining gypsum-based binding products ………………………… .. ……… .25
   
8. 
   Study of corrosion resistance of metals and non-metals…………… .29
   
9. 
   Study of the properties of oil and its products ……………………… ..33