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
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Chapter 2, Problem 2.18QAP
Interpretation Introduction

(a)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation:

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation:

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=30.3×106 Ω

Z = 30.3×106 Ω

ϕ=89.940

Explanation of Solution

Given information:

Frequency = 1 Hz

R = 30000 Ω

C = 0.033 µF

Xc=VpIp=1ωCXc=1ωC=11×0.033 ×106Ω=30.3×106 Ω

Z = R2+X2CZ = (30000)2+(30.3×106)2Z = 9×108+9.1809×1014Z = 9.180909×1014Z = 30.3×106 Ω

ϕ=arctanXCRϕ=arctan30.3×10630000=arctan1010=89.940

Interpretation Introduction

(b)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation:

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation:

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=30.3×103 Ω

Z = 42638 Ω

ϕ=45.30

Explanation of Solution

Given information:

Frequency = 103 Hz

R = 30000 Ω

C = 0.033 µF

Xc=VpIp=1ωCXc=1ωC=1103×0.033 ×106Ω=30.3×103 Ω

Z = R2+X2CZ = (30000)2+(30.3×103)2Z = 9×108+9.1809×108Z = 18.18×108Z = 42638 Ω

ϕ=arctanXCRϕ=arctan30.3×10330000=arctan1.01=45.2850

Interpretation Introduction

(c)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation:

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation:

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=303.03 Ω

Z = 30000 Ω

ϕ=0.580

Explanation of Solution

Given information:

Frequency = 106 Hz

R = 30000 Ω

C = 0.0033 µF

Xc=VpIp=1ωCXc=1ωC=1106×0.0033 ×106Ω=303.03 Ω

Z = R2+X2CZ = (30000)2+(303.03)2Z = 9×108+91827.2Z = 9.00×108Z = 30000 Ω

ϕ=arctanXCRϕ=arctan303.0330000=arctan0.010101=0.580

Interpretation Introduction

(d)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation;

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation;

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=30.3×107 Ω

Z = 30.3×107 Ω

ϕ=89.99990=900

Explanation of Solution

Given information:

Frequency = 1Hz

R = 300 Ω

C = 0.0033 µF

Xc=VpIp=1ωCXc=1ωC=11×0.0033 ×106Ω=30.3×107 Ω

Z = R2+X2CZ = (300)2+(30.3×107)2Z = 9×104+9.1809×1016Z = 9.1809×1016Z = 30.3×107 Ω

ϕ=arctanXCRϕ=arctan30.3×107300=arctan1010000=89.99990=900

Interpretation Introduction

(e)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation:

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation:

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=30.3×104 Ω

Z = 30.3×104 Ω

ϕ=89.940

Explanation of Solution

Given information:

Frequency = 103 Hz

R = 300 Ω

C = 0.0033 µF

Xc=VpIp=1ωCXc=1ωC=1103×0.0033 ×106Ω=30.3×104 Ω

Z = R2+X2CZ = (300)2+(30.3×104)2Z = 9×104+9.1809×1010Z = 9.1809×1010Z = 30.3×104 Ω

ϕ=arctanXCRϕ=arctan30.3×104300=arctan1010=89.940

Interpretation Introduction

(f)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation;

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation;

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=303.03 Ω

Z = 426.4 Ω

ϕ=45.290

Explanation of Solution

Given information:

Frequency = 106 Hz

R = 300 Ω

C = 0.0033 µF

Xc=VpIp=1ωCXc=1ωC=1106×0.0033 ×106Ω=303.03 Ω

Z = R2+X2CZ = (300)2+(303.03)2Z = 9×104+91827.2Z = 181827.2Z = 426.4 Ω

ϕ=arctanXCRϕ=arctan303.03300=arctan1.0101=45.290

Interpretation Introduction

(g)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation;

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation;

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=30.3×105 Ω

Z = 30.3×105 Ω

ϕ=89.940

Explanation of Solution

Given information:

Frequency = 1 Hz

R = 3000 Ω

C = 0.33 µF

Xc=VpIp=1ωCXc=1ωC=11×0.33 ×106Ω=30.3×105 Ω

Z = R2+X2CZ = (3000)2+(30.3×105)2Z = 9×106+9.1809×1012Z = 9.1809×1012Z = 30.3×105 Ω

ϕ=arctanXCRϕ=arctan30.3×1053000=arctan1010=89.940

Interpretation Introduction

(h)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation:

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation:

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=30.3×102 Ω

Z = 4.26×103 Ω

ϕ=45.290

Explanation of Solution

Given information:

Frequency = 1000 Hz

R = 3000 Ω

C = 0.33 µF

Xc=VpIp=1ωCXc=1ωC=11000×0.33 ×106Ω=30.3×102 Ω

Z = R2+X2CZ = (3000)2+(30.3×102)2Z = 9×106+9180900Z = 18180900Z = 4.26×103 Ω

ϕ=arctanXCRϕ=arctan30.3×1023000=arctan1.01=45.290

Interpretation Introduction

(i)

Interpretation:

The capacitive reactance, the impedance and the phase angle ϕ for the series RC circuit should be calculated.

Concept introduction:

The capacitive reactance (Xc) is a property of a capacitor that is analogous to the resistance of a resistor.

Xc=VpIp=1ωC

ω = frequency

C = capacitance

The impedance (Z) is given by following equation:

Z = R2+X2C

Xc = capacitive reactance

R = resistance

The phase angle ( ϕ ) is given by following equation:

ϕ=arctanXCR

Xc = capacitive reactance

R = resistance

Expert Solution
Check Mark

Answer to Problem 2.18QAP

Xc=3.03 Ω

Z = 3000 Ω

ϕ=0.0580

Explanation of Solution

Given information:

Frequency = 106 Hz

R = 3000 Ω

C = 0.33 µF

Xc=VpIp=1ωCXc=1ωC=1106×0.33 ×106Ω=3.03 Ω

Z = R2+X2CZ = (3000)2+(3.03)2Z = 9×106+91809Z = 9×106Z = 3000 Ω

ϕ=arctanXCRϕ=arctan3.033000=arctan1.01×103=0.0580

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