Chapter 8, Problem 8.67SP

Interpretation Introduction

Interpretation:

Heat evolved or absorbed in the given reaction of sodium with water has to be calculated.  The reaction is whether exothermic or endothermic has to be ascertained.

Concept Introduction:

Enthalpy corresponds to heat content of the system and it is represented by ‘H’ and it is the sum of internal energy ‘E’ and product of volume and pressure,

$H=E+PV$

$\Delta H$ refers to change in enthalpy.  $\Delta H$ can be calculated using the formula,

$\Delta H=\frac{q}{n}$

Where,

$\begin{array}{l}\text{n }\text{= no}\text{. of moles}\\ q=\text{ heat absorbed or evolved in the reaction}\end{array}$