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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:
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:
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.
Q. Show the properties of Aluminium Oxide ? Aluminium oxide, Al 2 0 3 is a highly ionic compound of aluminium. It is also known as alumina. As you have studied earlier, it occ
IN AMMONIUM ION NITROGEN DOESNT HAVE VALENCE ELECTRONS IN ITS VALENCE ORBITAL.
how to memorize cation and anion
GFAAS is often necessary to add modifiers in order to increase the sensitivity of the techniques.Giving example explain the principles used in the selection of such modifiers,be ca
A 4-m long curved gate is located in the side of a reservoir containing water as shown in Figure. Determine the magnitude of the horizontal and vertical components of the force of
The galvanic cells in which electrodes are made of same metal but they are immersed in the electrolytes of different concentrations in two half cells are called concentration cells
The fresh feed to an ammonia production process contains nitrogen (N 2 ) and hydrogen (H 2 ) in stoichiometric proportion, along with an inert gas (I). The feed is combined with
does the nature of the anode rays depend upon the nature of the discharge tube and the nature of the electrode?
if one ton contains 2000 pounds and the coal is 2% by mass sulfur, what is the mass sulfur in one ton of coal? how many grams of sulfur is this? how many moles of sulfur is this?
characteristics of irreversible reaction
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