题目内容

下列说法正确的是 ()

A. 只有恒压过程才有焓变
B. 只有等温等压且不做非体积功W'的过程的反应热才等于焓变
C. 任何过程都有焓变,且焓变等于反应热
D. 任意单质的焓变和自由能变都等于零

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标准状况和标准态是一个含义。

A. 对
B. 错

任意单质的标准摩尔生成热都为零。

A. 对
B. 错

Now English ( ) bu many people all over the world.

A. is spoken
B. was spoken
C. speaks
D. is speaking

The lost boy ( ) in the corner last night.

A. is found
B. finds
C. was found
D. found

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