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amb123
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One question posed in a general chem book I have were the trends of a couple of reaction types. They don't answer the question of why, though. Maybe you can help...
Identify periodic trends of these rxns:
Set 1:
H2 + X2 --> 2HX (X are halogens)
Ex: H2(g) + Cl2(g) --> 2HCL (g)
The trend is that the entropy changes become more positive for the heavier halogens.
Set 2:
2alkali + CL2 --> 2 alkaliCl
Ex: 2Li(s) + Cl2(g) --> 2LiCl (s)
The standard change in entropy for these rxns become increasingly negative with atomic mass of the alkali.
I have some speculations, but I'm probably just missing something here. I don't mind a complicated explanation and would in fact welcome that with compare to a hand wave.
Thank you,
-A
Identify periodic trends of these rxns:
Set 1:
H2 + X2 --> 2HX (X are halogens)
Ex: H2(g) + Cl2(g) --> 2HCL (g)
The trend is that the entropy changes become more positive for the heavier halogens.
Set 2:
2alkali + CL2 --> 2 alkaliCl
Ex: 2Li(s) + Cl2(g) --> 2LiCl (s)
The standard change in entropy for these rxns become increasingly negative with atomic mass of the alkali.
I have some speculations, but I'm probably just missing something here. I don't mind a complicated explanation and would in fact welcome that with compare to a hand wave.
Thank you,
-A