Describe the design and principle of constant current coulometry. Write three main applications of coulometric titrations.
See Answer →The conductivity of 0.001028 M acetic acid is 4.95 × 10-5 S cm-1. Calculate its (5) dissociation constant if the limited molar conductivity for acetic acid is 390.5 S cm2 mol-1 .
See Answer →Explain how will you determine dissociation constant of a weak acid or base by conductometric method?
See Answer →A solution of CuSO4 is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode?
See Answer →How will you analyse a binary alloy of copper and silver thermogravimetrically.
See Answer →Define conductivity, cell constant and molar conductivity
Resistance of a conductivity cell filled with 0.1M KCl solution is 100 Ω. If the resistance of the same cell when filled with 0.02 M KCl solution is 520 Ω, calculate the conductivity and molar conductivity of 0.02 M KCl solution. The conductivity of 0.1 M KCl solution is 1.29 S .
What is solid state membrane electrode? Draw a sketch diagram and describe their applications.
See Answer →Describe various factors that cause errors in pH measurement.
See Answer →What do you understand by cell potential? Calculate the potential of following
electrodes:
i) A copper electrode immersed in
ii) A zinc electrode immersed in
Draw all the spectra possible for the molecule of benzoic acid indicating the peak values for each of the spectrum.
See Answer →Taking a suitable example. Explain the fragmentation due to intermolecular rearrangement in mass spectrometry.
See Answer →Draw the NMR spectra of methylisopropyl ketone showing the values of all the photons.
See Answer →Explain the terms, magnetogyric ratio, spin flip, Fourier transformation, chemical shift and coupling constant.
See Answer →Describe the application of AAS in the determination of toxic elements present as environmental contaminants.
See Answer →Describe plasma as used in AES. Give an example and write the principle of AEC based on plasma sources.
See Answer →What is the difference between a premix nabuliser-burner and a total consumption burner? Give the advantage of flame atomization method.
See Answer →What is the reason of nonlinearity in the AAS plot? What other factors are responsible for this? Explain how these are resolved for an analyte.
See Answer →What is the advantage of Stokes fluorescence? Explain taking an example and illustrate your answer.
See Answer →Describe the processes that occur in the flame during a flame photometric experiment.
See Answer →Describe in brief the basic principles involved in atomic absorption spectrometry (AAS) atomic emission spectrometry (AES) and atomic fluorescence spectrometry (AFS).
See Answer →