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Multiple answers or none may be correct: Which of the following statements are T

ID: 540463 • Letter: M

Question

Multiple answers or none may be correct:

Which of the following statements are TRUE:

All biomolecules are highly soluble in water

Van der Waals forces are strong repulsive electrostatic interactions between permanently charged species

The hydrophobic effect is a function of non-polar molecules’ avoidance of interaction with water

Hydrogen bonds are strong dipole-dipole or charge-dipole interaction that arise between an acid (proton donor) and a base (proton acceptor)

pH is

neutral when pH > pOH

the –log of the [OH-]

a measure of the dissociation of 1 mol of H2O at 100°C and 5 atmospheres

a function of the ionization of salt

a.

All biomolecules are highly soluble in water

b.

Van der Waals forces are strong repulsive electrostatic interactions between permanently charged species

c.

The hydrophobic effect is a function of non-polar molecules’ avoidance of interaction with water

d.

Hydrogen bonds are strong dipole-dipole or charge-dipole interaction that arise between an acid (proton donor) and a base (proton acceptor)

Explanation / Answer

1)

c. The hydrophobic effect is a function of non-polar molecules’ avoidance of interaction with water
  
d. Hydrogen bonds are strong dipole-dipole or charge-dipole interaction that arise between an acid (proton donor) and a base (proton acceptor)

2) answer: none ,

   pH = - log[H3O+]