已知在T 1 到T 2 的温度范围内某化学反应所对应的∑n B C p , m (B) > 0 ,则在该温度范围内反应的△ r H ,则:( )。
A.
不随温度变化;
B.
随温度升高而减小;
C.
随温度升高而增大;
D.
与温度的关系无法简单描述。
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