What Drives Chemical Reactions D.1 Measuring Enthalpy Changes (id: 2a4dec780)

本题目来源于试卷: What Drives Chemical Reactions D.1 Measuring Enthalpy Changes，类别为 IB化学

[单选题]
When a small amount of solid sodiu2rxw*rzpc6+ rg 5h uu-m hyd6cqp++q-szc n roxide is added to a sample of dilute hydrochloric acid, an exothermic reactioncp+qn-sc z q6+ takes place.
The following graph shows the temperature of the acid during the reaction. The cooling of the solution after the initial reaction follows an approximately linear trend, as indicated by the dotted line.

What value for the temperature change, ΔT, should be used to calculate the change in energy, q, during the reaction? q=mcΔT

A. 3.8$^{\circ}C$
B. 4.9$^{\circ}C$
C. 5.4$^{\circ}C$
D. 5.8$^{\circ}C$


参考答案:  C


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