Chapter 10, Problem 99AP

Interpretation Introduction

Interpretation:

The molecular formula of the compound is to be determined with given mass of the compound, volume, pressure, and temperature.

Concept Introduction:

The empirical formula represents the simplest ratio of all the atoms present in a particular compound.

The molecular formula is a multiple of the empirical formula.

The relation between the molecular formula and the empirical formula is

$\text{Molecular formula }=n\times \text{empirical formula}\text{.}$

Here, $n$ is the multiple, which must be a whole number.

The value of $n$ can be calculated as $n=\frac{\text{molar mass of compound}}{\text{empirical formula mass}}.$

The ideal gas equation is

$PV=nRT.$

Here, $P$ is pressure, $V$ is volume, $n$ is number of moles, $R$ is the gas constant and $T$ is the temperature.

The number of moles of compound can be calculated as

$\text{Molar mass}=\frac{\text{mass}}{\text{moles}}\text{.}$

The conversion of temperature from degree Celsius to Kelvin can be done by using the formula given below:

$T\left(\text{in K}\right)=T\left(\text{in }°\text{C}\right)+\mathrm{273.15.}$

The relationship between liters and milliliters can be expressed as

$1\text{ mL}={10}^{-3}\text{ L}\text{.}$

To convert milliliters into liters, the conversion factor is $\left(\frac{{10}^{-3}\text{ L}}{1\text{ mL}}\right)$.