Chapter 16, Problem 16.14P

(a)

Interpretation Introduction

Interpretation:

The reaction between ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$ and ${\text{KIO}}_{\text{3}}+\text{KI}$ has to be written. Reason behind the accurate measurement of $\text{6}\text{gm}$ $\text{KI}$ and $\text{1}\text{mL}$ ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$ has to be explained.

Concept Introduction:

Iodometric titration is a type of titration reaction in which iodides reacts with another oxidizing agent in acidic or neutral medium. As a result of this, iodides are converted to iodine and this formed iodine is back titrated in present of starch indicator against another standard reducing agent (usually sodium thiosulphate) of known concentration.

Mass of a species can be calculated from mole number as follows:

    $\text{Mass}\text{of}\text{a}\text{species}=\left(\text{Mole}\text{number}\right)\left(\text{Molar}\text{mass}\right)$

(b)

Interpretation Introduction

Interpretation:

Balanced reaction between ${\text{I}}_3^{-}$ and sulfite has to be explained.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Concentration of sulfite in the wine has to be determined in terms of milligrams per liter.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

Whether results different significantly differ at $95\%$ has to be determined.

Concept Introduction:

t test is a statistical hypothesis that determines any significant differences between the mean of two related groups. It is mostly used in data sets. If ${\text{t}}_{\text{calculated}}<{\text{t}}_{\text{table}}$ then, the differences between the two mean of two groups are not significant.