Chapter 9, Problem 9.113SP

(a)

Interpretation Introduction

Interpretation:

Lewis structure of hydroxyl radical has to be drawn.

Concept Introduction:

Electron dot structure also known as Lewis dot structure represents the number of valence electrons of an atom or constituent atoms bonded in a molecule.  Each dot corresponds to one electron.

(b)

Interpretation Introduction

Interpretation:

The affinity of hydroxyl radical for H atoms has to be explained.

Concept Introduction:

STP refers to standard temperature and pressure conditions which are $25°C$ and $1atm$ pressure.

Octet rule is rule of thumb which refers that atoms combine in such a way that their respective valence shells gets filled with eight electrons to attain more stability.

(c)

Interpretation Introduction

Interpretation:

Enthalpy change of the given reaction has to be estimated.

Concept Introduction:

$\Delta H°$ refers to change in enthalpy.  Change in enthalpy in a reaction and bond energy (BE) are related as,

    $\text{ΔH°}\text{=}\text{ΣBE(reactants)-ΣBE(products)}$

(d)

Interpretation Introduction

Interpretation:

The maximum wavelength required to break an $O-H$ bond in water has to be calculated.

Concept Introduction:

Energy and wavelength $\left(\lambda \right)$ are related by formula,

    $\lambda =\frac{hc}{E}$

Where,

    $\begin{array}{l}\lambda =wavelength\\ h=Planck\text{'}s\text{constant}\\ c=velocityoflight\\ E=Energy\end{array}$