Chapter 5, Problem 112SCQ

(a)

Interpretation Introduction

Interpretation:

The standard enthalpy of vaporization of bromine has to be determined

Concept Introduction:

The standard enthalpy of formation is the enthalpy change for the formation of 1mol of the compound directly from its component elements in their standard states.

Enthalpy change for the reaction ${\text{Δ}}_{\text{r}}{\text{H}}^{\text{0}}$${\text{ΣnΔ}}_{\text{f}}{\text{H}}^{\text{0}}\text{(products)}\text{-}{\text{ΣnΔ}}_{\text{f}}{\text{H}}^{\text{0}}\text{(reactants)}$

(b)

Interpretation Introduction

Interpretation:

The energy required for the reaction of bromine has to be calculated.

Concept Introduction:

The standard enthalpy of formation is the enthalpy change for the formation of 1mol of the compound directly from its component elements in their standard states.

Enthalpy change for the reaction ${\text{Δ}}_{\text{r}}{\text{H}}^{\text{0}}$${\text{ΣnΔ}}_{\text{f}}{\text{H}}^{\text{0}}\text{(products)}\text{-}{\text{ΣnΔ}}_{\text{f}}{\text{H}}^{\text{0}}\text{(reactants)}$