(a) Interpretation: The density of solution I 2 is 0.794gm/cm 3 which is present in ethanol. Transmission of 33.2% of the radiation from a Mo Ka is done by using a layer of 1.50 cm. Mass absorption coefficient are 39.2,0.70, 0.00, 1.50 for I, C, H and O respectively. Percentage of I 2 present in ethanol is to be determined, neglecting the absorption by alcohol. Concept introduction: Formula used for the calculation are- ln P o P = μ M ρ x Where, P o = transmitted beam power P = incident beam power µ M = mass absorption coefficient ρ = density x = sample thickness μ M = W × μ Where, μ M = mass absorption coefficient of the sample μ I 2 = mass absorption coefficient of I 2 W= weight fraction of iodine

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Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter 12, Problem 12.8QAP
Interpretation Introduction

(a)

Interpretation:

The density of solution I2 is 0.794gm/cm3 which is present in ethanol. Transmission of 33.2% of the radiation from a Mo Ka is done by using a layer of 1.50 cm. Mass absorption coefficient are 39.2,0.70, 0.00, 1.50 for I, C, H and O respectively. Percentage of I2 present in ethanol is to be determined, neglecting the absorption by alcohol.

Concept introduction:

Formula used for the calculation are-

lnPoP=μMρx

Where,

Po= transmitted beam power

P = incident beam power

µM = mass absorption coefficient

ρ = density

x = sample thickness

μM=W×μ

Where,

μM = mass absorption coefficient of the sample

μ I2 = mass absorption coefficient of I2 W= weight fraction of iodine

Interpretation Introduction

(b)

Interpretation:

Percentage of I2 present in ethanol is to be determined when alcohol is present.

Concept introduction:

Formula used for the calculation are-

lnPoP=μMρx

μM=W×μ

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