AP Chemistry (thermodynamics)the answer in units of J/Kplease show all the steps and give the explanation.Thanks.

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AP Chemistry (thermodynamics)the answer in units of J/Kplease show all the steps and give the explanation.Thanks.
AP Chemistry (thermodynamics)
the answer in units of J/K
please show all the steps and give the explanation.Thanks.

AP Chemistry (thermodynamics)the answer in units of J/Kplease show all the steps and give the explanation.Thanks.
这个题还是挺复杂的,主要是步骤多一些.
1 先算出混合之后的温度,就是155g 的乙醇吸收的热,跟245g 乙醇放出的热相等.
2 算出155g 的乙醇的熵增加,
3 算出 245g 的乙醇的熵的减少
4 两者之和,就是熵变.