Class notes
Hydrogen
This notes contain a fundamental concept of the topic This includes illustration of my own and also from book and internet Hopefully this helps you in your exams and understanding the concept
[Show more]
Seller
Follow
Content preview
,↓Hydrogen forms far more compound than anyother element
.
2
Similarity to alkali metal : Forms oxides ,
halides
,
sulphides and reactivity
"
"Halogens :
resemblance in IE
,
forms diatomic molewle ,
forms hydride
and large no - of covalent .
compound
.
3
Due to resemblance of both Alkali metal a
Halogen and non-resemblance of
both Keep it
makes H to separately in periodic table
.
4 occurance of
t most in (70 % of total
:
I is abundant element the universe
mass)
and principal element in solar atomosphere
Jupiter & Saturn is
majorly
h2
·
Due it earth gravity so 0 15 %
to
light mass escapes only
· .
,
by mass in earth atomosphere.
Combined
·
for 15 4 % .
of mass of earth crust and ocean
hydrogen
.
5
isotopes of : 3 isotopes
>
-
Protium H
>
-
Deuterium ?t (0v) D- Heavy hydrogen
>
- Tritium H
Harold Curey got nobel prize for Separating hydrogen isotope
·
of mass number 2
by physical method .
·
Predominant form Protium
Deuterium form of HD
·
-
0 0156 %
-
of terrestial hydrogen mostly in
·
Tritium -
One atom per 108 protium atoms -
·
Only milium is radioactive and emits 'ow
energy B particles
(ty2 - 12 33
.
yr)
, ·
all have same electronic config so same chemical properties
rate of reaction differ due to diff Bond
Only entral
Dy
.
·
in physical props these isotope differ considerably due to
their large mass difference .
.
6 Preparation of
42 :
i) Lab method :
2n + 2H + > In
&+
+
+2 /In with dil .
Hal)
2n + 2 NaOH >
NaznO2 + 12
Sodium
Zincate
ii) Commercial Production :
210 Electrolysis , Pt
electrodey 24
+
02
Traces of acid/base
·
high purity of 11799 .
95 % ) is obtained by electrolysing
warm
ag . Bacon Soln . blu Ni electrode
,
·
obtained as byproduct in manufacture of Naon and D2
at anode : zaial >
2
+ ze-
at cathode ze 201-
Ho
: + >
1 +
Reyn of HC
high temp
·
Steam on or loke at .
Cntan + 2
+
nH20
1220k
>n(0 + (2n + 1)12
Ni
Nowdd
1270K
Co 312
Chu + H20 Ni
> +
I I
Produce
used to
= water lov Syngas
an
S
methand GHC
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller prasannaaravazhi. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now