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Chemistry - Hess' Law
RioNii
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Chemistry - Hess' Law
Given the following two reactions:
(1)Pb(s) + Cl2(g)PbCl2(s) H(1) = -359.4 kJ
(2)Hg(l) + Cl2(g)HgCl2(s) H(2) = -224.3 kJ
Calculate the enthalpy change for the following reaction:
(3) Pb(s) + HgCl2(s) PbCl2(s) + Hg(l)
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bio_man
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Hi
RioNii
, change equation (2) to:
HgCl2(s) <-> (2)Hg(l) + Cl2(g) ΔH = +224.3 kJ
Now add them:
ΔH = -359.4 kJ + 224.3 kJ =
-135.1 KJ
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Chemistry - Hess's Law
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Chemistry - Hess's Law
Chemistry - Hess' Law
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RioNii
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A month ago
Thank you sir!
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bio_man
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A month ago
No problem. I have marked it solved
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