Lesson: Chapter 8 — Heat changes in chemical reactions

Measuring a heat of reaction 5 of 5 Reset answers

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Question 5

0.1 mol of NaOH reacts with 0.1 mol of HCl and releases 4.2 kJ. What is the heat of reaction per mole?

A 420 kJ mol^-1 B 0.42 kJ mol^-1 C 42.0 kJ mol^-1 D 4.2 kJ mol^-1

The right answer is the one marked above.

42.0 kJ mol^-1. 4.2 kJ ÷ 0.1 mol = 42.0 kJ per mole.

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