### 11.83

Posted:

**Tue Feb 06, 2018 3:34 pm**For question 11.83: Calculate the equilibrium constant at 25 C and at

150 C for each of the following reactions, using data available in Appendix 2A:

(a) NH4Cl(s) <--> NH3(g) + HCl(g)

(b) H2(g) + D2O(l) <--> D2(g) + H2O(l)

Is the calculation different when the temperature is at 150 other than the value of T changing? I am using the equation delta G=-RTlnK and I am getting the right answers when calculating K at 25 degrees but when I do the same calculation using 150 degrees I am getting wrong answers.

150 C for each of the following reactions, using data available in Appendix 2A:

(a) NH4Cl(s) <--> NH3(g) + HCl(g)

(b) H2(g) + D2O(l) <--> D2(g) + H2O(l)

Is the calculation different when the temperature is at 150 other than the value of T changing? I am using the equation delta G=-RTlnK and I am getting the right answers when calculating K at 25 degrees but when I do the same calculation using 150 degrees I am getting wrong answers.