FUND PHYS 10TH EXT WILEY PLUS
10th Edition
ISBN: 9781119500100
Author: Halliday
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 41, Problem 35P
To determine
To calculate:
the mass of phosphorus needed to dope 1 gm of silicon so that the number density of
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Silicon has a conductivity of 5×10-4 (Q.m)-1 when pure. How many
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What mass of phosphorus is needed to dope 1.0 g of silicon so that the number density of conduction electrons in the silicon is increased by a multiply factor of 106 from the 10^16 m-3 in pure silicon.
(Electroplating)
A steel part with surface area A = 130 cm² is to be tin-plated. What average plating thickness will result if 15 amps are applied for 10 min in an acid sulfate electrolyte bath? The cathode efficiency for tin is E = 90% and the plating constant C = 4.21 x 10-2 mm³/amp-s.
V = CIt
V = ECIt
d =
V
A
Typical cathode efficiencies in electroplating and values of plating constant C.
Compiled from [18].
Plate Metal Electrolyte
Cadmium (2) Cyanide
Chromium (3) Chromium-acid-sulfate
Copper (1)
Gold (1)
Nickel (2)
Silver (1)
Tin (4)
Zinc (2)
Cyanide
Cyanide
Acid sulfate
Cyanide
Acid sulfate
Chloride
Plating Constant ca
Cathode Efficiency % mm³/amp-s (in³/amp-min)
6.73 × 10-²
(2.47 × 10-4)
X
2.50 × 10-2
(0.92 × 10-4)
7.35 x 10-2
10.6 x 10-²
3.42 x 10-2
(2.69 × 10-4)
(3.87 × 10-4)
(1.25 × 10-4)
10.7 x 10-2
(3.90 × 10-4)
4.21 x 10-2
(1.54 × 10-4)
4.75 × 10-2
(1.74 x 10-4)
90
15
98
80
95
100
90
95
¹Most common valence given in parentheses (); this is the value assumed in determining…
Chapter 41 Solutions
FUND PHYS 10TH EXT WILEY PLUS
Ch. 41 - Prob. 1QCh. 41 - Prob. 2QCh. 41 - Prob. 3QCh. 41 - Prob. 4QCh. 41 - Prob. 5QCh. 41 - Prob. 6QCh. 41 - Prob. 7QCh. 41 - Prob. 8QCh. 41 - Prob. 9QCh. 41 - Prob. 10Q
Ch. 41 - Prob. 11QCh. 41 - Prob. 1PCh. 41 - Prob. 2PCh. 41 - Prob. 3PCh. 41 - Prob. 4PCh. 41 - Prob. 5PCh. 41 - Prob. 6PCh. 41 - Prob. 7PCh. 41 - Prob. 8PCh. 41 - Prob. 9PCh. 41 - Prob. 10PCh. 41 - Prob. 11PCh. 41 - Prob. 12PCh. 41 - Prob. 13PCh. 41 - Prob. 14PCh. 41 - Prob. 15PCh. 41 - Prob. 16PCh. 41 - Prob. 17PCh. 41 - Prob. 18PCh. 41 - Prob. 19PCh. 41 - Prob. 20PCh. 41 - Prob. 21PCh. 41 - Prob. 22PCh. 41 - Prob. 23PCh. 41 - Prob. 24PCh. 41 - Prob. 25PCh. 41 - Prob. 26PCh. 41 - Prob. 27PCh. 41 - Prob. 28PCh. 41 - Prob. 29PCh. 41 - Prob. 30PCh. 41 - Prob. 31PCh. 41 - Prob. 32PCh. 41 - Prob. 33PCh. 41 - Prob. 34PCh. 41 - Prob. 35PCh. 41 - Prob. 36PCh. 41 - Prob. 37PCh. 41 - Prob. 38PCh. 41 - Prob. 39PCh. 41 - Prob. 40PCh. 41 - Prob. 41PCh. 41 - Prob. 42PCh. 41 - Prob. 43PCh. 41 - Prob. 44PCh. 41 - Prob. 45PCh. 41 - Prob. 46PCh. 41 - Prob. 47PCh. 41 - Prob. 48PCh. 41 - Prob. 49PCh. 41 - Prob. 50PCh. 41 - Prob. 51PCh. 41 - Prob. 52PCh. 41 - Prob. 53P
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