1) Hydrogen bonding is shown by molecules containing hydrogen attached to: A) hi

Question

1) Hydrogen bonding is shown by molecules containing hydrogen attached to:

A) highly electronegative atoms

B) highly electropositive atoms

C) any atoms

D) only oxygen

2) The equilibrium vapor pressure of a few liters of a liquid is dependent on:

A) the temperature only

B) the mass of the liquid

C) the volume of the liquid

D) the surface area of the liquid

3) Consider this statement: Carbon dioxide is more easily solidified than nitrogen because the van der Waals forces acting between the CO2 molecules are less than those acting between the N2 molecules>

A) Both assertion and reason are correct statements, but the reason is NOT the accepted explanation of the assertion.

B) Both the assertion and reason are correct statements, and the reason is the accepted explanation of the assertion.

C) The assertion is NOT a correct statement, but the reason is a correct statement.

D) The assertion is a correct statement, but the reason is NOT a correct statement.

C) Both the assertion and reason are NOT correct statements.

4) In which pair do both compounds exhibit predominantly ionic bonding?

A) SO3 and HCl

B) KNO3 and CaO

C) NaF and H2O

D) KCl and CO2

Explanation / Answer

1. a) Hydrogen attached to highly electronegative atoms (N,O and F).

2) Depends on temperature

3)CO2 is easily solidifed than N2 because the vanderwaals forces acting between CO2 molecules are more than those acting b/w N2

So answer is (D)

4) Answer is (B)

Ionic bonding: bond between metal and non-metal

In KNO3: Ionic bond is between K+ and NO3-

In CaO: Ionic bond is b/w Ca and O

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