sorry a few more chemistry...?

Which of the following is not a buffer solution

a weak acid (to neutralize a strong base)and its conjugate base(to neutralize a strong acid)

a weak base(to neutralize a strong acid)and its conjugate acid (to neutralize a strong base)

a strong acid(to neutralize a strong base) and its conjugate base(to neutralize a strong acid)

formic acid and sodium formate

Which statement about alcohols is not correct

Alcohols contain hydroxyl functional groups.

Alcohols are organic molecules.

Alcohols contain nitrogen.

Alcohols are named by their Greek prefix + -anol.

What is the correct order from lowest to highest boiling points for the following?

hexane, pentane, butane, propane, ethane, methane

In the reaction on PCl5 dissociates to give PCl3 and Cl2

PCl5(g)-> PCl3(g)+Cl2(g) The partial pressures of PCl5, PCl3 & Cl2 are 0.875 atm, 0.463 atm & 1.98 atm Repectively, the value of the equilibrium when constant is what?