Chapter 5.4, Problem 6PE

Interpretation Introduction

Interpretation: The potassium hydroxide is given to be used to unclog sink drains. The reaction of potassium hydroxide with water is given to be quite exothermic.

The signs of $\Delta H_{\text{sys}}$ and $q_{\text{surr}}$ is to be predicted.

Concept introduction: The signs of $\Delta H_{\text{sys}}$ and $q_{\text{surr}}$ are opposite to each other.

To determine: The signs of $\Delta H_{\text{sys}}$ and $q_{\text{surr}}$.