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What pressure (in bar) of ( O2 ) would be required to make the emf of an oxygen electrode zero in a 1.0 M ( H2SO4 ) solution at 25ºC?
CONCEPT:
EMF of Electrodes in Solutions
Adsorption of gas on platinum surface is less if :
Adsorption of Gas on Solid Surface
Explanation:-
The correct answer is 2) the critical temperature of the gas is low
One gram of a monobasic acid when dissolved in 100 g of water lowers the freezing point by 0.186°C. Now, 0.25 g of the same acid are dissolved and titrated with 15.1 mL of N/10 alkali. The degree of dissociation of the acid is (kf (H2O) = 1.86)
Degree of Dissociation
Major product of the following reaction is
Reaction of Primary Amines with Nitrous Acid
The correct answer is option 1
The correct increasing order of extent of hydrolysis in the following is
Extent of Hydrolysis in Metal Chlorides
EXPLANATION:
ORDER OF EXTENT OF HYDROLYSIS is CCl4 < MgCl2 < AlCl3 < SiCl4
So, the correct is answer is CCl4 < MgCl2 < AlCl3 < SiCl4
Which of the following is an example of ketohexose?
Ketohexose
In Lassaigne’s test, the organic compound is fused with a piece of sodium metal in order to
Lassaigne’s Test
So, the correct answer is Convert the covalent compound into a mixture of ionic compounds
Which of the following has the highest value of pKb?
Basicity and pKB of Amines
The correct answer is option 3: Aniline (highest pKB due to strong resonance effect reducing the lone pair availability).
In which case van’t Hoff factor is maximum?
Van’t Hoff Factor (i)
So the correct answer is Aqueous potassium ferricyanide, 30% ionised
The correct hybridisation state of iodine atom in molecules is , respectively
Hybridization of Iodine in Different Molecules
So, the correct
Option 1: sp3d, sp3d3, sp3d2
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