9.3 ammonia and fertilizers

04.12.2020
08:59:39
Dear students, great morning
Today's topic : ammonium nitrate and other fertilizers in Ur chemistry course book pg.no : 237  & 238
The important points are
1. Ammonium nitrate is the most important nitrogenous fertilizers
2.it contains 35% by mass of nitrogen
3.it produced when ammonia solution reacts with nitric acid
4.formula for ammonium nitrate or nitram = NH4NO3
5.Ammonium salts tend to make the soil slightly acidic.to overcome this they can be mixed with chalk ( calcium carbonate) which neutralise this effect
6.'nitro  -chalk ' is an example of a compound fertilizer.
7.why fertilizers are important for plants ?
* Three most  important minerals which plants need are
1.nitrogen (N): important for healthy leave
2.phosphorus ( P ) : important for healthy roots
3.potassium ( K): important for production of flowers and plants
To supply this Artificial fertilizers like NPK fertilizers are used.
For better understanding of concepts watch the video
Homework is given
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