Question

A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 313.0 Torr at 45.0 °C. Calculate the value of ΔH°vap for this liquid.

Calculate the normal boiling point of this liquid.

How would I do this? Please help

Answer 1

@Rohitkhanna

Answer 2

Should you use Clausius-Clapeyron equation?

Answer 3

do I just solve for T2 and use the same values?

Answer 4

Well, let the normal boiling point be T2

Answer 5

wouldn't that just give me the T that is given in the question ?

Answer 6

Nope. Sorry :/ I suck at explaining chemistry

Answer 7

i just get a very small number

Answer 8

What did you get for ΔH°vap?

Answer 9

im not good at chemistry but let's try

Answer 10

43.55 kj/mol

Answer 11

I used \[\log\frac{ P2 }{ P1 }=\frac{ ΔH }{2.303R }*(\frac{ 1? }{ T1 }-\frac{ 1 }{ T2 })\]

Answer 12

Erase the ?

Answer 13

what is v?

Answer 14

I got 49.78kj

Answer 15

Lol. I don't know if i'm right. Ignore me :))

Answer 16

volume i dont know if that's right , it's been i while i dont see chemistry

Answer 17

lol

Answer 18

sing those number? i dont have V so i dont think i can use that

Answer 19

You saw my equation?

Answer 20

yea

Answer 21

Have you tried it?

Answer 22

yea...and i got 43.55...its ok..i will do the question tmr...im just really tired now

Answer 23

Okies. Just close this question ^_^