Calculations using the Van't Hoff Equation






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josephyim1L
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Calculations using the Van't Hoff Equation

Postby josephyim1L » Thu Feb 28, 2019 2:30 pm

What are the different applications of the Van't Hoff Equation?

Example from the homework:
11.15 (a) Calculate the reaction Gibbs free energy of I2(g) S 2 I(g) at 1200. K (K = 6.8) when the partial pressures of I2 and I are 0.13 bar and 0.98 bar, respectively. (b) What is the spontaneous direction of the reaction? Explain briefly.

Carissa Young 1K
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: Calculations using the Van't Hoff Equation

Postby Carissa Young 1K » Thu Feb 28, 2019 7:01 pm

For that problem I used deltaG= deltaGo + RTlnQ which further is deltaG=-RTlnK + RTlnQ. I don't know really what the applications of the Van't Hoff equation.

Manu Vohra 1L
Posts: 61
Joined: Wed Oct 03, 2018 12:15 am

Re: Calculations using the Van't Hoff Equation

Postby Manu Vohra 1L » Sat Mar 02, 2019 9:43 am

This problem would not require the Van't Hoff equation. An instance where you would need to use the Van't Hoff equation would be if you were looking to find a K value at a given temperature T2 (you would have to be given K at another temperature as well to use as K1 and T1 in the equation).


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