已知下列数据: A+3B=C,Δ r H m θ = -10kJ·mol -1 ,则反应2A+6B=2C的Δ r H m θ 应该为:
A.
5 kJ·mol -1
B.
-20 kJ·mol -1
C.
-5 kJ·mol -1
D.
15 kJ·mol -1
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参考答案:
举一反三
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