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虽然ΔU = Qv,但U是状态函数,而Qv不是状态函数。( )

判断题
2021-09-01 23:30
A、正确
B、错误
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正确答案
A

试题解析

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理想气体从 p1 绝热膨胀至 p2 时, W =Δ U ,绝热膨胀时若外压为零则 W = 0 ,Δ U = 0 ;若外压不为零则Δ U ≠ 0 。以上两Δ U 不相等与 U 为状态函数的性质是否矛盾?
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