Question

42) Which of the following compounds will be affected by the presence of an electric field AH2 B) 02 C) HCI D) N2 43) In which of the three phases of matter would you expect hydrogen bonding between watet molecules to be the strongest? (A) solid phase (H20 Os very close together) B) liquid phase (H20 Os more separated than solid phase) C) gas phase (H20 Os much farther apart than liquid phase) D) It is equally strong in all three phases. 44) Dipole dipole forces are an important factor to consider in determining whether or not substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the most soluble in water? A) CCl4 B) NH3 C) N2 D) CO2 45) Dipole dipole forces are an important factor to consider in determining whether or not a substance will dissolve in water (a molecule which has a dipole). Which of the following compounds would you expect to be the least soluble in water? A) BF3 B) NH3 CHF D) H2S 46) Which of the following compounds will be the least soluble in water? A) CH3OH BYCH4 C) NH3 D) CH3CH2OH

Answer 1

42) The molecula that has permanant dipole moment, will be affected by the presence of an dechric field. H₂ ,O₂ and Hy are non-polar. Only He is polar having a permanant dipole moment. Hence answer is Hu. .. In close than solid phase , as the H₂O Os are very together, strength of H-bonding is greater in liquid and gas phase. 44) Water is polar molecule. So, water will with dissolve polar molecules in it cela, N₂, co, are non polar due to their structures. CIM NEN O=C=0 ei sa M=0 M =0 linear ineen U=0 tehahedral But Nits is polar Nohtuto So, lits is most soluble in water ® 43 Being polar, water can dissolve polar substance in it but not non-polar substances. NIH, HF, H₂S are polar. H - F HARTH #0 uto Mto M=o But BF3 is non-polar So, fz is least - soluble in water o

4) ањон, Hн,, С.Ну син, оң ол с ро\ол. . 4-о: 1 ДА + 0 Ал 1 о But Ни с. Chg is non-polar. Hence, Cty will be Н least o soluble in waten : н А = 0