Give a brief account of the role of computers in analytical instrumentation.
See Answer →Organic reagents play an important role in gravimetric analysis. Describe the different types of reactions involved in such determinations.
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What is Mohr titration? Explain the principle of Mohr’s titration explaining the equilibria involved in end point determination.
See Answer →Differentiate between stepwise formation constants and overall formation constants for the formation of a complex with the help of an example.
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What are oxidimetric reagents? Illustrate the use of potassium bromate as an oxidimetric reagent with the help of a suitable example.
See Answer →Calculate the equilibrium constant of the following reaction and predict the direction of the reaction.
Ni (s) + 2Ag+ (aq.) ⇌ Ni²+ (aq.) + Ag(s)
Given: E°Ni²⁺/Ni = -0.25 and E°Ag⁺/Ag = 0.80
See Answer →Discuss the role of non-aqueous solvents in acid base titrations.
See Answer →What are indicators? Discuss the Ostwald’s theory of acid base indicators and derive an expression relating the pH and the concentration of two forms of the indicator.
See Answer →What is meant by buffer capacity? Calculate the buffer capacity of a solution, which is 0.10 M in formic acid and 0.10 M in sodium formate. (pKa of acetic acid = 3.74).
See Answer →Which is more basic; 0.10 M NaOCl or 0.001M KOH. Justify your answer with calculations.
See Answer →What is meant by the leveling effect of a solvent? Explain with the help of a suitable example.
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A reactant A gives a product P in a first order irreversible reaction. Derive an integrated rate equation for the reaction. Calculate the time required for 90 % conversion of A to P if the time for 50% conversion is 30 s.
See Answer →What is meant by incompatibility of chemicals? List different methods of storage of chemicals and state the recommendations for the safe storage of chemicals in a laboratory.
See Answer →Why is it essential to consider the safety aspect at the time of the construction of the laboratory building? List any three requirements that must be met as per the norms in a chemical laboratory.
See Answer →What is meant by a ‘sample’ for analytical determination? Discuss the sampling of food materials.
See Answer →Why do we need to reject some data? Explain the ‘4d’ rule for the rejection of a data.
See Answer →What is meant by confidence level of an analytical data? The measurements of glucose levels in a patient suffering from diabetes gave the following results: 1.108, 1.100, 1.122, 1.088, 1.115, 1.099 and 1.075 g/L. Calculate the 95% confidence interval for the set; you may assume the value of Cn to be = 0.4
See Answer →What is meant by confidence level of an analytical data? The measurements of glucose levels in a patient suffering from diabetes gave the following results: 1.108, 1.100, 1.122, 1.088, 1.115, 1.099 and 1.075 g/L. Calculate the 95% confidence interval for the set; you may assume the value of Cn to be = 0.4
See Answer →What is meant by confidence level of an analytical data? The measurements of glucose levels in a patient suffering from diabetes gave the following results: 1.108, 1.100, 1.122, 1.088, 1.115, 1.099 and 1.075 g/L. Calculate the 95% confidence interval for the set; you may assume the value of Cn to be = 0.4
See Answer →What is meant by confidence level of an analytical data? The measurements of glucose levels in a patient suffering from diabetes gave the following results: 1.108, 1.100, 1.122, 1.088, 1.115, 1.099 and 1.075 g/L. Calculate the 95% confidence interval for the set; you may assume the value of Cn to be = 0.4
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