B.Sc.-Basic Chemistry-I-Mumbai-November 2018

MUMBAI UNIVERSITY

Subject: Basic Chemistry

Semester: 1

[Total Time: 2½ Hours]
[Total Marks: 75]
N.B: 1) Attempt all questions.
        2) Each question carries 15 marks.
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Q. 1) Do as directed: ( any fifteen) (15 M)

Give IUPAC name of the following compounds:

i)

ii) HOOC(CH₂)₃COOH
iii) CH₃ – CO – CH₃
iv) CH₃COOH
v) CH₃ CO NH₂
vi) CH₃ – CH₂– CH₂-OH

Explain the term:
vii) Coordinate bond
viii) Lattice energy
ix) Mole Fraction
x) Buffer range
xi) Primary standard
xii) ppb
xiii) Lowry’s concept of acid
xiv) Basic Buffers
xv) Ionic product of water

Give examples of:
xvi) Compound exhibiting intramolecular hydrogen bond.
xvii) Compound exhibiting ionic bond

Fill in the blanks:
xviii) The Bond between NH3 BF3 is called ___________ bond.
xix) The weak force of attraction present in non-polar molecules is known as———.
xx) The bond angle is BF3 molecule is ——-.

Q. 2) Attempt the following questions.

A) Draw structures of the following compounds. (8M)

i) Isopentane
ii) 1,2,3 Propanetriol
iii) 2- chloro propanamine
iv) Butane

B) State basic rules of IUPAC nomenclature in ketones. (7M)

OR

C) Draw structures of the following compounds (8M)
i) Hexane
ii) Prop-2-enol
iii) Ethanol
iv) 2-pentene

D) Discuss IUPAC nomenclature of alkyne. Give suitable examples. (7M)

Q. 3) Answer the following questions.

A) What is a Covalent bond? Explain by giving any two examples. (8M)

B) Give a brief account of a Non-covalent bond. (7M)

OR

C) Draw electron dot structure of any two ionic compounds. State features of ionic bond. (8M)

D) Explain the structure of CsCl using ionic bond concept. (7M)

Q. 4) Attempt the following questions

A) i) Explain in brief, the various ways in which concentration of a solute can be expressed. (4M)

ii) What is the molarity of a solution that contains 10g of glucose dissolved in 250 g of water? (Molecular weight of glucose= 180) (4M)

B) Discuss physical properties of water. (7M)

OR

C) i) Discuss hydrolysis of salt of strong acid and strong base. (4M)

ii) Calculate pH of 0.25M HCl (4M)

D) Show that pH+ pOH= 14  (7M)

Q. 5) Write short note: ( Any three) (15M)

i) IUPAC nomenclature of carboxylic acids

ii) Types of hydrogen bonds

iii) Structure of CH4 molecule

iv) Interaction of water with polar solutes

v) Henderson – Hasselbalch equation for acidic buffer.
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