What Drives Chemical Reactions D.2 Energy Cycles in Reactions (id: 13138993f)

本题目来源于试卷: What Drives Chemical Reactions D.2 Energy Cycles in Reactions，类别为 IB化学

[单选题]
Which expression gives the enthfy(5g;s 4lgy yalpy change.x 6tgn2ak++dji av+ c, ΔH, for the production of hydrated copper (II) sulfate from its anhydrous salt akd6 2g++vta. i+cjnx:

A. ΔH$_1$=ΔH$_2$-ΔH
B. ΔH=ΔH$_1$-ΔH$_2$
C. ΔH=ΔH$_1$+ΔH$_2$
D. ΔH$_2$=ΔH$_1$+ΔH


参考答案:  B


本题详细解析:
By applying Hess’s law, regardless of the route by which a chemical reaction proceeds, the enthalpy change will always have the same, provided that the initial and final states of the system are identical.

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