Explain about hydrogen sulphide, Chemistry

Assignment Help:

Q. Explain about Hydrogen Sulphide?

Hydrogen sulphide is the only thermodynamically stable sulphane. It is a foul smelling and poisonous gas.

H2S is prepared in the laboratory by treating FeS with dilute HCI in Kipp's apparatus. In aqueous solution H, S is a weak acid. At 293 K, it dissociates as shown below: 

740_Hydrogen Sulphide.png

You must have used H2S in qualitative identification and separation of cations. This separation is based on selective precipitation of the sulphides in acidic and alkaline medium:  In the acidic medium, the ionisation of H2S which is a weak acid, is further suppressed and the solubility product of sulphides of relatively less soluble cations of Group 11, namely.  Pb2+, Hg2+, Bi3+, Cu2+ , Cd2+ . As3+, Sb3+, Sn+2 is exceeded:

1988_Hydrogen Sulphide1.png

In Group IV, in the presence of ammonia, a higher concentration of S2- ions is obtained leading to the precipitation of the more soluble sulphides of Zn, Mn, Ni and Co.

73_Hydrogen Sulphide2.png


Related Discussions:- Explain about hydrogen sulphide

What is peroxodisulphuric acid, Q. What is Peroxodisulphuric Acid? It i...

Q. What is Peroxodisulphuric Acid? It is also known as perdisulphuric acid or simply persulphuric acid. The acid can be obtained  by the action of chlorosulphonic acid on H 2 0

Eqivalent weight of an element, what is n-factor and what is the formula fo...

what is n-factor and what is the formula for calculating it

Reversible cell, What things i can include under this topic(reversible cell...

What things i can include under this topic(reversible cell).

Assignment, assignments of hydrogen bonding

assignments of hydrogen bonding

Error check, verify that less than 5% of the reactants have been consumed

verify that less than 5% of the reactants have been consumed

Phenol, Draw the structure of anisole and phenetole

Draw the structure of anisole and phenetole

Equation for the Haber process, Ask question #M How do you calculate exact...

Ask question #M How do you calculate exactly how much ammonia you get from certain pressure changes using the equilibrium equation? Tried writing the equation like this: 2(1+x)^

Then the value of which is incorrect, If n= 3 , then the value of   which...

If n= 3 , then the value of   which is incorrect: (1) 0        (2) 1        (3) 2        (4)3 Ans: 3

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd