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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
why pcl3 is less polar than sicl4
Nomenclature of polyfunctional complex organic compound
Name the principal ore of tin or lead. Describe the different steps (along with equationsfor the reactions) involved in the extraction of the metal from the ore named. Name
de-Broglie equation is: (1) n γ= 2d sin θ (2) E= hv (3) E= mc 2 (4) γ= h/ mv Ans: γ= h/ mv
The quantum number which may be designated by s, p, d, and f instead of number is: (1) n (2) l (3) m 1
Q. The equilibrium cell potential of the galvanic cell is found to be E cell , eq = 1.410 V at 298.15K. The standard cell potential is E cell , eq = 1.360V. (a) Writ
When Solutions of ammonia and Iron (II) bromide are mixed, what is the net ionic equation?
What gas form by the hydrolysis of CaCN 2 ? Write down the equation of the reaction of CaCN 2 with water.
a nitrogen molecule travel at about 505 m/s at room temperature. find the velocity of a helium atom at the same temperature
Ionic compounds do not have: (1) Hard and brittle nature (2) High melting and boiling point (3) Directional properties (4) Soluble in polar solvents Ans: Direction
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