Weak Forces

Question 1

What is the order extent of Hydrogen Bond of following:

i)H20,HF,NH3
ii)H2O,H2O2

Answer 1

i)H20>HF>NH3
ii)H2O>H2O2

Question 2

Compare the physical properties of inert gases
i)Boiling Point
ii)Volatile Nature
iii)Liquification
iv)Solubility in water

Answer 2

i)He<Ne<Ar<Kr<Xe<Rn
ii) He>Ne>Ar>Kr>Xe>Rn
iii) He<Ne<Ar<Kr<Xe<Rn
iv) He<Ne<Ar<Kr<Xe<Rn

Question 3

Compare the physical properties of F2,Cl2,Br2,I2
i)Boiling point and Melting point
ii)Physical State

Answer 3

i) F2<Cl2<Br2<I2
ii)Gas,Gas,Liquid and Solid

Question 4

Compare the physical properties of H2,D2,T2
i)Boiling and Melting Point

Answer 4

i)H2<D2<T2

Question 5

Compare the Physical Properties of HF,HCl,HBr,HI
i)Boiling Point
ii)Melting Point

Answer 5

i)HF>HI>HBr>HCl
ii)HI>HF>HBr>HCl
(Due to solid state structure)

Question 6

Compare the Physical Properties of H2O,H2S,H2Se,H2Te
i)Boiling Point
ii)Melting Point

Answer 6

i)H20>H2Te>H2Se>H2S
ii)H20>H2Te>H2Se>H2S

Question 7

Compare the Physical Properties of NH3,PH3,AsH3,SbH3:
i)Boiling point
ii)Melting point

Answer 7

i)SbH3>NH3>AsH3>PH3
ii)NH3>SbH3>AsH3>PH3

Question 8

Compare the Physical Properties of H2O,HF,NH3
i)Boiling Point
ii)Melting Point

Answer 8

i)H2O>HF>NH3
ii)H2O>NH3>HF
(Solid State Structure)

Question 9

Compare Boiling and Melting point of H2O and H2O2

Answer 9

i)Boiling Point:H2O<H2O2
ii)Melting Point:H2O>H2O2

Question 10

Compare the physical properties of ortho-nitrophenol and para-nitrophenol:
i)Boiling Point
ii)Volatile Nature
iii)Viscosity
iv)Water Solubility
v)Vapour Pressure

Answer 10

i) ortho-nitrophenol < para-nitrophenol
ii) ortho-nitrophenol > para-nitrophenol
iii) ortho-nitrophenol < para-nitrophenol
iv) ortho-nitrophenol < para-nitrophenol
v) ortho-nitrophenol > para-nitrophenol

Question 11

Compare the physical properties of C2H5OH,C2(OH)2 and C3(OH)3:
i)Boiling point
ii)Volatile Nature
iii)Viscosity
iv)Water Solubility

Answer 11

i) C2H5OH < C2(OH)2 < C3(OH)3
ii) C2H5OH > C2(OH)2 > C3(OH)3
iii) C2H5OH < C2(OH)2 < C3(OH)3
iv) C2H5OH < C2(OH)2 < C3(OH)3

Question 12

Arrange in increasing or decreasing order of Boiling Point:
i)XeF2,XeF4,XeF6
ii)SiCl4,CCl4
iii)CH3Cl,CH2Cl2,CHCl3,CCl4
iv)CH3CH2CH3,CH3OCH3,C2H5OH
v)C2H5OH,HCOOH
vi)HCOOH,CH3COOH
vii)CH3COOH,CH3CONH2
viii)H2,He
ix)BF3,B(CH3)3

Answer 12

i)XeF2>XeF4>XeF6
ii)CCl4>SiCl4
iii)CH3Cl<CH2Cl2<CHCl3<CCl4
iv) CH3CH2CH3<CH3OCH3<C2H5OH
v)C2H5OH<HCOOH
vi)HCOOH<CH3COOH
vii)CH3COOH>CH3CONH2
viii)H2>He
ix) BF3<B(CH3)3