Only eighteen and nineteen please E) hydro 17) In et dipake terces E) hydrogen b

Question

Only eighteen and nineteen please

E) hydro 17) In et dipake terces E) hydrogen bondire, T(C 15) The phane diagram of asubetane is given abeve. This saoaace isa AI liquid Cl sa D) crystal supercritical uid 19y) Whot is the name f the pint labellad as point supercritical fluid on the phase diag am shewn abowe? B) triple port D) critical temperature ESSAY. Write your answer in the space provided or on a separabe sheet of papes semperature changes 20j Explain what change oecurs to the visc rsity of the folawing compound when the from 25C to 50C. Explain the reason boe this change

Explanation / Answer

Q14

NaCl = Na+ + Cl-, this is ionic compound, and has ions

therefore, in water

H2O = polar, then has dipole

the interaction is ion-dipole (Strongest)

Q17

if (CH3)2NH is analyzed, it has:

- london dispersion forces, because it has mass

- Dipole interactions, sine it is polar

- Hydrogen bonding, because of NH2 group

then choose D, E

Q18

at T = 0°C, P = 1 atm

this must be

"w"

which is a solid

Q19

name of Z point --> triple point, since 3 lines of equilbirium intesect htere

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