Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
Question
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Chapter A1, Problem A1.4QAP
Interpretation Introduction

(a)

Interpretation:

The minimum weight of the sample for relative error due to 0.5 mg loss to be less than 0.1% needs to be determined.

Concept introduction:

The minimum weight is calculated by the relative error formula which is given below-

Er=EmEtEt×100

Here,

Er = relative error

Em = measured value

Et = true value

Interpretation Introduction

(b)

Interpretation:

The minimum weight of the sample for relative error due to 0.5 mg loss to be less than 0.5 % needs to be determined.

Concept introduction:

The minimum weight is calculated by the relative error formula which is given below-

Er=EmEtEt×100

Here,

Er = relative error

Em = measured value

Et = true value

Interpretation Introduction

(c)

Interpretation:

The minimum weight of the sample for relative error due to 0.5 mg loss to be less than 0.8 % needs to be determined.

Concept introduction:

The minimum weight is calculated by the relative error formula which is given below-

Er=EmEtEt×100

Here,

Er = relative error

Em = measured value

Et = true value

Interpretation Introduction

(d)

Interpretation:

The minimum weight of the sample for relative error due to 0.5 mg loss to be less than 1.2 % needs to be determined.

Concept introduction:

The minimum weight is calculated by the relative error formula which is given below-

Er=EmEtEt×100

Here,

Er = relative error

Em = measured value

Et = true value

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