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Q. Explain about Neutral and Amphoteric oxides?
Neutral oxides have neither acidic nor basic properties and when dissolved in water, they give neutral solutions, e.g., CO, N20, etc.
Amphoteric oxides show both acidic and basic properties. They react with acids as well as with alkalis to give salt and water, e.g., Al203, ZnO, PbO, etc.
ZnO + 2HCl-----------------> ZnCl2+ H2O
ZnO + 2NaOH---------------> Na2ZnO2+ H2O
Al2O3+ 6HCl--------------> 2AlCl3+ 3H2O
Al2O3+ 2NaOH + 3H2O-----------> 2NaAl (OH)4
Explain the Winnowing and Primary processing of wheat Winnowing: In this process, the impurities are separated on the principle that their density differs from that of the
Calculate the force constant of CF4 and SiF4 and compare their relative strengths with each other. The heats of formation of CF 4 and SiF 4 are -1222 kJmol -1 and -1615
proeprties of glucose
What are the effects on transport number?
A chemical transport barge routinely carries chemicals across Lake Futura. In an unfortunate incident the chemical transport barge, carrying a solution of phenol in synthetic oil,
How do I cite information that I get from this website? Specifically, I''d like to know what textbook this comes from: http://www.expertsmind.com/topic/chemistry/solvent-extractio
what is mean by group displacement law?
Q. Concentration factors affecting taste quality? There is a specific range at which the tasteful substances should be used. The concentration required for identification is
17.4g CaCO3= mol O
The following has zero valency : (1) Sodium (2) Beryllium (3) Aluminium (4) Krypton Ans: Krypton
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