Answers 2
Answer:
3as it is the only number left it is 3 answered by bhondu baba
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Author:
booker
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Explanation:
Exothermic process describes a process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also form of light, sound etc. Now here system bond energy= (bond energy of hydrogen+bond energy of clorine) = (4+2)KJ/mol =6kj/mol
sourrunding bond energy= 2×bond energy of HCl
=8 kj/mol
now, Total Exchange of energy = system - sourrunding = 6-8 =-2kj/mol
hence, we get a negative value means the energy is realesed to the surrounding so the reaction is expthermic.
in case of endothermic process total exchange energy will be positive or reverse above.
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Author:
micah6yx0
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