Hello students! Welcome to my channel
Chemistry Notes by Tri P
So, today I am going to take
CBSE 10 standard chapter - Acids, Bases and Salts
part 5 portion on this second chapter (chemistry)
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So. let's move on to today's Topics
Just before that, let's have small recap of previous class
In the last class, we have studied - Importance of pH in everyday life,
family of salts and pH in salts.
Today we are going to study - Chemicals from common salt
means, what chemical can we get from common salts [NaCl].
is what we are going to study
So, let's see today's topics
Common salt - a raw material for chemicals
first one - we can get Sodium hydroxide
then bleaching powder, baking soda and washing soda
These are the topics we are going to cover today (preparation from common salt)
Moving on to first section
Chemicals from common salt
We get common salt from sea, that's what we normally think, right ? Nothing important about this point. just mentioning
We get salt from sea water, by the process of separation.
There are also some other sources for solid salt in various parts of the world
an it contains impurities. Due to which , it will be brown in colour(impurities). These are called Rock Salt
These are very old deposits may be from sea water and these are called Rock Salt.
Let's see the picture,
and we can see it's brown in colour
and since it contains impurities, it is brown in colour normally.
Let's go to the main Topic
How can we produce sodium hydroxide from common salt.
First point, electricity is passed through an aqueous solution of sodium chloride, brine solution
When electricicity is passed through
Aqueous solution means, a solution in water which is dissolved with sodium chloride
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So. let's meet on next class
before that, there is one more thing
I'm putting a question for you people
to check/assess yourself, whether you have understood the class
Try to answer it yourself, and if possible comment it on the comment box below (optional)
So here is the question -
A compound which is formed due to re-crystallisation of sodium carbonate. Identify the compound and write it's chemical formula ?
So that's today's question, and try to comment in comment box below
So let's meet on next class with next video.
Till then take care and Thank you :)
