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FPSC · CSS 2017

Chemistry, Paper I

100 marks · 3 hours · 7 questions
This paper Chemistry · all yearsQ. 2 · Derive Schrodinger wave equation for…Q. 3 · Define heat capacities and molar…Q. 4 · State and explain Kohlrausch's law.…Q. 5 · Discuss the effect of temperature…Q. 6 · What is adsorption isotherm? Derive…Q. 7 · What is electrophoresis? Give its…Q. 8 · State John-Teller theorem. Explain it…With this paper← 20162017 →
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Not yet checked 1 of 7 questions have not yet been compared with the official paper.

Part II

Q. 2
  1. (a)Derive Schrodinger wave equation for motion of a particle in one dimensional box. [10]
  2. (b)Solve Schrodinger wave equation to find the expression for wave function energy of a particle in one dimensional box. [6]
  3. (c)What is Eigen function and Eigen value? Give examples. [4]
(20)
Q. 3
  1. (a)Define heat capacities and molar heat capacities. Prove that Cp−Cv=RC_p-C_v=R for ideal gases. [10]
  2. (b)What is Gibbs energy? Derive a relation between standard Gibbs energy change and equilibrium constant. [6]
  3. (c)Differentiate spontaneous and non spontaneous process. [4]
Not yet checked
(20)
Q. 4
  1. (a)State and explain Kohlrausch's law. Give its applications. [10]
  2. (b)What is meant by standard deviation? Give its significance in analytical chemistry. [6]
  3. (c)Briefly describe conductometric titrations. [4]
(20)
Q. 5
  1. (a)Discuss the effect of temperature on rate of chemical reaction on the basis of Arrhenius equation. How can you determine activation energy and pre-exponential factor for a chemical reaction using Arrhenius equation? [10]
  2. (b)Derive kinetic equation for 1st order reaction. [6]
  3. (c)Prove that half life period for 1st order reaction is independent of initial concentration of reactant. [4]
(20)
Q. 6
  1. (a)What is adsorption isotherm? Derive Langmuir adsorption isotherm for adsorption of a gas on solid surface. [10]
  2. (b)What is enzyme catalysis? Discuss its kinetics. [6]
  3. (c)What are surfactants? Give their properties. [4]
(20)
Q. 7
  1. (a)What is electrophoresis? Give its principle and discuss its applications in biochemistry. [10]
  2. (b)Give six chemical properties of nitrogen. [6]
  3. (c)What is Common ions effect? Give its applications. [4]
(20)
Q. 8
  1. (a)State John-Teller theorem. Explain it using suitable examples from coordination complexes. [10]
  2. (b)Give postulates of Werner's theory of coordination complexes. [6]
  3. (c)Briefly describe nuclear decay rate law for disintegration of radioactive elements. [4]
(20)

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The 2017 CSS Chemistry paper set by the FPSC. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet.

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