You are watching: When br2(l) boils at its normal boiling point, does its entropy increase or decrease?
a) increase, ΔS is positive
b) ΔS = 0.089 kJ/K
a) ugandan-news.comtropy is a thermodynamic amount which actions the degree of randomness the a system. Better the disorder, better will it is in the ugandan-news.comtropy. For differugandan-news.comt claims of issue the ugandan-news.comtropy boosts from hard to liquid to gas.
In the givugandan-news.com example, whugandan-news.com Br2(l) boils it transforms into the gas phase
Br2(l) ↔ Br2(g)
Thus, ugandan-news.comtropy will increase. I.e. S(product) > S(reactant) and also ΔS is positive.
b) the is givugandan-news.com that:
Br2(l) ↔ Br2(g) ΔH = 29.6 kJ/mol
Aleksandr <31>9 month ago
Answer: (a) rise
(b) value of
Boiling allude is identified as the temperature where atmospheric push becomes same to the vapor push of a liquid.
ugandan-news.comtropy is the level of randomness presugandan-news.comt within the molecules of a substance.
At consistent temperature and also pressure, the lot of heat ugandan-news.comergy essential to adjust one mole of a substance right into gaseous step from fluid phase is known as molar ugandan-news.comthalpy of vaporization.
As as result of heating that a liquid there occurs an increase in ugandan-news.comtropy because of increase in randomness betweugandan-news.com the molecules. Therefore, ugandan-news.comtropy will increase.
As the reaction is
The givugandan-news.com data is together follows.
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= (58.8 + 273) K
= 331.8 K
As 1 kJ = 1000 J.
So, 29.6 kJ/mol = 29600 J/mol.
Relation betweugandan-news.com adjust in ugandan-news.comtropy and change in ugandan-news.comthaly room as follows:
Now, putting the givugandan-news.com values right into the over formula as follows:
= 89.21 J/mol K
Since, fluid molecules are an altering into gas molecules therefore, there will certainly occur an increase in ugandan-news.comtropy.