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Q. Use values of Δ f H and Δ f G to evaluate the standard molar reaction enthalpy and the thermodynamic equilibrium constant at 298.15 K for the oxidation of nitrogen to form a
Q. What is Oxidation Numbers? Ans. Chemists find it useful to describe the oxidation states of an element by means of oxidation numbers. The oxidation number of an element
Neutrons are found in atoms of all elements except in: (1) Chlorine (2) Oxygen (3) Argon (4)Hydrogen Ans: Hydrogen
principle and application
The electronic structure of four elements A, B, C, D are: (1) 1s 2 (2) 1s 2 , 2s 2, 2p 2 , (3) 1s 2, 2s 2 , 2p 5 ,
COMPOUNDS A AND B CONTAIN COPPER AND SULPHUR.EACH CONTAINS 20% AND 33.33% EACH BY MASS OF SULPHUR RESPECTIVELY.FIND THE RATIO OF THE ELEMENTS USING THE THIRD LAW OF CHEMICAL COMBIN
Q. Physical Properties of group16? Similar to the groups discussed earlier. The metallic character in Group 16, increases with increasing atomic number. Oxygen and sulphur are
what are the disadvantges of donnan membrane
Define the following observations: (i) Most of the known noble gas compounds are those of xenon. (ii) CIF3 exists but FCI 3 does not. (iii) Between the hydrides of elemen
Predicting the feasibility of reaction and does not show the rate of chemical reaction
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