poic acid anhydnde bond is broken b) c) d) e All of the above A phosphoric ester
ID: 568585 • Letter: P
Question
poic acid anhydnde bond is broken b) c) d) e All of the above A phosphoric ester bond is broken The D-ribose sugar of ATP is made up of high-energybonds The purine base adenine is made up of high-energy bonds 10. The heat of vaporization of H,O is 2,260 J/g while that of CH,(CH)ACH, (butane) is 381 J/g. The for this large difference is the ability of H,O molecules to: a) readily dissociate into H' and OH b) form hydrogen bonds with HO c) form ionic bonds with H20 d) readily dissociate into H,O' and OH e) form covalent bonds with H,O 11. which of the following bonds is most non-polar?- a) O-H b) N-H c) C-H d) C-O e) o-P C1-Cl harc tne same elechoni 12. Ethanol (C,JH OH) is readily soluble in H,O because of which of the following interactions? a) Ion-dipole interactions b) Covalent interactions c) Hydrophobic interactions d) Dipole-dipole interactions e) Disulphide bridges , Hydrogen bonding mort polar 13. NaCl is readily soluble in H,O because of which of the following interactions? a) Ion-dipole interactions Plr t20 b) Covalent interactions c) Hydrophobic interactions d) Dipole-dipole interactions e) Disulphide bridges 14. Which of the following compounds is most likely to form a micelle? a) Acetic acid b) Glucose Glycerol Sodium palmitate e) Sodium phosphateExplanation / Answer
12. C2H5OH is readily soluble in water (H2O) because of its ability to form hydrogen bond, as the electronegativity difference is present in between oxygen and hydrogen. And since hydrogen bonding is a special case of dipole - dipole interaction. Hence the correct option is (d) dipole -dipole interaction.
13. NaCl ionizes to form Na+ and Cl- ion in water and then these ions interact with the polar H2O molecule. Which helps it in dissolution.
Hence the correct option is (a) ion- dipole interaction.
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