Percentage difference in pressure determined using Ideal gas equation and van der Waals equation should be calculated. Concept Introduction: Ideal gas Equation: Any gas is described by using four terms namely pressure, volume, temperature and the amount of gas. Thus combining three laws namely Boyle’s, Charles’s Law and Avogadro’s Hypothesis the following equation could be obtained. It is referred as ideal gas equation. V ∝ nT P V = R nT P PV = nRT Here, n is the moles of gas P is the Pressure V is the Volume T is the Temperature R is the gas constant Van der Waal’s gas equation: The van der Waal equation describes the ideal gas as it approaches to zero. The van der Waal equation contains correction terms a and b for the intermolecular forces and molecular size respectively. The van der Waal equation is as follows, [ P + a ( n V ) 2 ] ( V n − b ) = R T

Question

Part 1. Draw monomer units of the following products and draw their reaction mechanism 1) Bakelite like polymer Using: Resorcinol + NaOH + Formalin 2) Polyester fiber Using a) pthalic anhydride + anhydrous sodium acetate + ethylene glycol B)pthalic anhydride + anhydrous sodium acetate + glycerol 3) Temporary cross-linked polymer Using: 4% polyvinyl alcohol+ methyl red + 4% sodium borate

Answer 1

Question

Chapter 8.8, Problem 8.13PSP

Interpretation Introduction

Interpretation:

Percentage difference in pressure determined using Ideal gas equation and van der Waals equation should be calculated.

Concept Introduction:

Ideal gas Equation:

Any gas is described by using four terms namely pressure, volume, temperature and the amount of gas. Thus combining three laws namely Boyle’s, Charles’s Law and Avogadro’s Hypothesis the following equation could be obtained. It is referred as ideal gas equation.

V ∝ nTP V = RnTPPV = nRT

Here,

n is the moles of gas

    P is the Pressure

V is the Volume

    T is the Temperature

    R is the gas constant

Van der Waal’s gas equation:

The van der Waal equation describes the ideal gas as it approaches to zero. The van der Waal equation contains correction terms a and b for the intermolecular forces and molecular size respectively.

The van der Waal equation is as follows,

[P+a(nV)2](Vn−b)=RT

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