organic chem plz help (super hard )?

Question

1)............... is the gaseous byproduct when sodium metal is added to ethanol

2)what type of orbital do the lone pair electrons of oxygen occupy in ethanol? ............
3)when two carbenes collide, they dimerize to give an ................
4)distillation of mixtures of ethanol and water cannot increase the ethanol content of the mixture above 95% because this solution boils at lower temperature than either pure ethanol or pure water . the term which describes this lower boiling point mixtures is ...............
fill in the blank plz, answer any question that u know
thanks already for whoever answers.
happpy holidays

Answer 1

1) Hydrogen
2) 2p (I think)
3) Alkene
4) Azeotrope

Answer 2

1) Hydrogen

2) p

3) Olefin

4) Azeotrope

Answer 3

1. silane polysulfides