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## 0213 Group Title 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 7 months ago 7 months ago

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1. 0213 Group Title

@Rohitkhanna

2. petiteme Group Title

Should you use Clausius-Clapeyron equation?

3. 0213 Group Title

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

4. petiteme Group Title

Well, let the normal boiling point be T2

5. 0213 Group Title

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

6. petiteme Group Title

Nope. Sorry :/ I suck at explaining chemistry

7. 0213 Group Title

i just get a very small number

8. petiteme Group Title

What did you get for ΔH°vap?

9. RaphaelFilgueiras Group Title

im not good at chemistry but let's try

10. 0213 Group Title

43.55 kj/mol

11. petiteme Group Title

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

12. petiteme Group Title

Erase the ?

13. 0213 Group Title

what is v?

14. petiteme Group Title

I got 49.78kj

15. petiteme Group Title

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

16. RaphaelFilgueiras Group Title

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

17. RaphaelFilgueiras Group Title

lol

18. 0213 Group Title

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

19. petiteme Group Title

You saw my equation?

20. 0213 Group Title

yea

21. petiteme Group Title

Have you tried it?

22. 0213 Group Title

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

23. petiteme Group Title

Okies. Just close this question ^_^