Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 12.5, Problem 5P
Interpretation Introduction
a)
Interpretation:
Between an infrared radiation with λ =1.0x10-6m and an X- ray with λ =3.0x10-9m that which has higher energy is to be stated.
Concept introduction:
Energy and wavelength of a radiation are related by the equation E per mole =NA hc/λ (per mole).
To state:
Between an infrared radiation with λ =1.0x10-6m and an X- ray with λ =3.0x10-9m that which has higher energy.
Interpretation Introduction
b)
Interpretation:
Between a radiation with ν =4.0x109 Hz and a radiation with λ =9.0x10-6m which has higher energy is to be stated.
Concept introduction:
Energy and wavelength of a radiation are related by the equation E = NAhc/λ (per mole).
Energy and frequency of a radiation are related by the equation E = NAhν
To state:
Between a radiation with ν=4.0x109 Hz and a radiation with λ =9.0x10-6m which has higher energy.
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Tablet powder containing 80 mg of promazine hydrochloride is ground to a paste with 10 ml of 2 M HCl. The paste is then diluted with 200 ml of water, shaken for 15 min and finally made up to 500 ml. A portion of the extract is filtered. Then, 5 ml of the filtrate is taken and diluted to 120 ml with 0.1 M HCl.
– Absorbance reading=0.755 is read at a wavelength wavelength of 251 nm
– A (1%, 1 cm) value of promazine.HCl at 251 nm=935
– Stated content of promazine.HCl per tablet=50 mg
– Weight of 20 tablets=1.667 g
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expected content in tablet taken is:
A-97.78 g/mL
B-97.78 g/100ml
C-0.0097g/mL
D-97.78 mg/100ml
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B-80 g/100ml
C-0.00081g/mL
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B-16.15 mg/100ml
C-19.38 mg/100ml
D-16.15 mg/mL
Amount of promazine.HCl in original extract is:
A-96.90mg
B-80.75mg
C-96.90mg/100ml
D-80.75mg/100ml…
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Chapter 12 Solutions
Organic Chemistry
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