What is diazo coupling? Write the reaction for the preparation of Congo red dye using this reaction.
See Answer →Explain the reduction of nitrobenzene using different reagents.
See Answer →How can a carboxylic acid be converted to a carboxylic acid chloride using different reagents? How will you convert the acid chlorides to
i) other halides, and
ii) the starting carboxylic acid?
See Answer →How will you carry out the following conversions?
i) 2- Chlorobutane to 2-Methylbutanoic acid.
ii) 1- Bromobutane to Pentanoic acid.
See Answer →Explain the acidic and basic behavior of carboxylic acids.
See Answer →Define a potentiometric titration and draw a schematic graph of a redox potentiometric titration
See Answer →Calculate the amount of chlorine gas evolved during the electrolysis of molten potassium chloride on passing a current of 0.5 A for two hours through it.
See Answer →The cell reaction for a galvanic cell is given below:
i) Write the half-cell reactions at the anode and the cathode.
ii) Calculate the value of cell emf under standard conditions; use data from Table 7.1.
iii) Will the reaction be spontaneous as written?
See Answer →Differentiate between voltaic and electrolytic cells.
See Answer →In the determination of transference numbers of HCl by moving boundary method a 0.10 M solution of HCl was taken in a cell having uniform area of cross section of 1.6 cm2 . At the end of experiment the boundary moved by 11.7 cm and 0.22 g of silver was deposited on the cathode of silver coulometer. Calculate the transference numbers of ions of HCl.
See Answer →What are transference numbers and how are they related to ionic mobilities?
See Answer →A conductivity cell having a cell constant of 0.5 cm –1 filled with 0.02 M solution of KCl at 298 K gave a resistance of 20.2 Ω. The water used for preparing the solution had a conductivity of 7.1 × 10–6 S cm–1. Calculate the molar conductivity of 0.02 M KCl solution
See Answer →Differentiate between conductivity and molar conductivity of a solution.
See Answer →Draw the phase diagram for water system and label the one, two and three phase equilibria on it
See Answer →Give the significance of critical point in the phase diagram of water
See Answer →Solid ammonium chloride undergoes sublimation on heating. In the vapour phase ammonium chloride decomposes to give NH3(g) and HCI(g). The following equilibrium is established.
What is the number of
i) phases in the system,
ii) components in the system, and
iii) degrees of freedom of the system?
See Answer →What is a phase? What is the maximum number of phases possible for a one-component system?
See Answer →What is the critical solution temperature? Draw and explain the variation of mutual solubility of two liquids which exhibit upper CST
See Answer →How is the solubility of a gas affected by different factors? Explain.
See Answer →Concentration cells
See Answer →