BSc Sem IV 2014 2015 2015 Chem L Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Attempt any four: ibb’ i ing of terms involved State the Gibb’s phase rule and explain meaning o What are ideal and non-ideal solutions? What are the conditions for the solution to be
   • C) Discuss the variation of mutual solubility for Water + Phenol system
   • D) The vapour pressure of pure benzene and toluene at 320 K is 3.2 X 10 Nm and
   • 1.02 X 10*Nm? respectively. Calculate the vapour pressure of solution containing one mole of benzene and 2.5 mole of toluene if solution obeys Raoult’s law
   • E) Explain principle and instrumentation of steam distillation
   • F) State and explain Nernst distribution law and give its limitations
   • G) State and explain Raoult’s law
   • H) What is number of components? Explain it with suitable examples
2. Q2 Attempt any four: 20 marks
   • A) Describe the construction & working of Daniel cell with a suitable example
   • B) Calculate and of the following cell
   • C) Explain the classification of electrodes with example
   • D) Explain Henderson’s equation for acidic buffer solution,
   • E) a) Derive the relationship between pH & pOH
   • b) What is buffer solution? Give its types
   • F) Distinguish between
   • a) Reversible and irreversible cel] b) Primary cell and secondary cell
   • G) Define the following terms
   • d) pH pOH
   • H) Write down the total cell reaction for the following cells CHEMISTRY P-I SEM-IV MARKS 75 TIME 2.5HRS
3. Q3 Attempt any four:
   • A) Explain the terms
   • B) Explain the Ostwald’s theory of Acid-base
   • C) Explain the principle of photometric titration. Give its advantages & limitations
   • D) Explain the conductometric titration of strong acid against strong base
   • E) Explain the principle of potentiometric titration and give its advantages & limitations
   • b) What are the requirements fulfill the criteria of titrimetic analysis?
   • G) Explain the curves in photometric titration
   • H) Explain the Classification of titrimetric analysis
4. Q4 Attempt any three: 15 marks
   • A) Explain and negative deviation from Raoult’s law,
   • B) Discuss advantages & limitations of conductometric titration
   • C) Explain the conductometric titration of mixture of strong and weak acids against weak
   • D) Solve the problems
   • a) Liquid A (Mol. Wt. - 46) and liquid B (Mol. Wt. 18) form an ideal solution at the vapour pressure of pure liquid A and Pure liquid B are 5.865 x 104 Nm” and 2.333 x 10? Nm? respectively. Calculate the vapour pressure of the solution of A in B containing 0.2 mole fraction of A,
   • b) A solution of two liquids A and B exhibits ideal behavior. The mole fraction of A is
   • 0.4. The vapour Pressure of pure component A is 0.5 bar and that of B is 0.3 bar Calculate the partial vapour Pressure of A and B in solution
   • E) Write a note on Standard Hydrogen electrode ;
   • F) a) State Nernst equation & explain the terms involved in it
   • b) What is Salt-bridge? Give its two functions

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