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Postby AlyssaYeh_1B » Sat Feb 22, 2020 2:37 pm

This question asks us to calculate the equilibrium constants for two reactions at 25C and 150C. Can someone walk me through the problem? I'm unsure of where to start. I assume we need to calculate delta G, but which equation would we use to calculate K? These are the reactions:

(a) NH4Cl(s) <--> NH3(g) + HCl(g)
(b) H2(g) + D2O(l) <--> D2(g) + H2O(l)

Parker Smith
Posts: 102
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Re: 5J.15

Postby Parker Smith » Sat Feb 22, 2020 2:50 pm

Once you find delta G, you can use the delta G= delta G0 + RTln(Q) equation, or more specifically, the delta G0= -RTln(K)

Rebekah Alfred 1J
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Re: 5J.15

Postby Rebekah Alfred 1J » Sat Feb 22, 2020 3:33 pm

To calculate K, you need to manipulate the first equation in this image to the last equation:

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