Student Solutions Manual for Ebbing/Gammon's General Chemistry, 11th
11th Edition
ISBN: 9781305673472
Author: Darrell Ebbing, Steven D. Gammon
Publisher: Cengage Learning
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Chapter 7, Problem 7.103QP
Interpretation Introduction
Interpretation:
From the given data, the photoelectric work function of metal has to be calculated. Also the metal has to be identified.
Concept introduction:
- When light hits on metal surface, the electrons get ejected only if the light frequency greater than threshold value of the metal which is constant for each metal is called
photoelectric effect . - When the photon with same or greater frequency than minimum value, then ejection of one electron occurs from surface of metal. This leads to photoelectric effect.
- In photoelectric effect, a photon having least energy and can eject electron from metal surface. This energy is called photoelectric work function
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Experiment:
Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below.
Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization.
Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C
Sample C-Cool the third sample in an ice-bath to 0-2 °C
Results:
weight after recrystalization and melting point temp.
A=0.624g,102-115°
B=0.765g, 80-105°
C=1.135g, 77-108
What is the percent yield of A,B, and C.
Chapter 7 Solutions
Student Solutions Manual for Ebbing/Gammon's General Chemistry, 11th
Ch. 7.1 - The frequency of the strong red line in the...Ch. 7.1 - The element cesium was discovered in 1860 by...Ch. 7.1 - Laser light of a specific frequency falls on a...Ch. 7.2 - The following are representative wavelengths in...Ch. 7.3 - Calculate the wavelength of light emitted from the...Ch. 7.3 - What is the difference in energy levels of the...Ch. 7.3 - An atom has a line spectrum consisting of a red...Ch. 7.4 - Calculate the wavelength (in picometers)...Ch. 7.4 - A proton is approximately 2000 times heavier than...Ch. 7.5 - Explain why each of the following sets of quantum...
Ch. 7 - Give a brief wave description of light. What are...Ch. 7 - What is the mathematical relationship among the...Ch. 7 - Prob. 7.3QPCh. 7 - Planck originated the idea that energies can be...Ch. 7 - In your own words, explain the photoelectric...Ch. 7 - Prob. 7.6QPCh. 7 - Prob. 7.7QPCh. 7 - Prob. 7.8QPCh. 7 - Explain the main features of Bohrs theory. Do...Ch. 7 - Prob. 7.10QPCh. 7 - Prob. 7.11QPCh. 7 - Prob. 7.12QPCh. 7 - Prob. 7.13QPCh. 7 - Prob. 7.14QPCh. 7 - Bohr described the hydrogen atom as an electron...Ch. 7 - Give the possible values of a. the principal...Ch. 7 - What is the notation for the subshell in which n =...Ch. 7 - Prob. 7.18QPCh. 7 - Which of the following statements about a hydrogen...Ch. 7 - Which of the following statements is (are) true?...Ch. 7 - Of the following possible transitions of an...Ch. 7 - What wavelength of electromagnetic radiation...Ch. 7 - Light Energy, and the Hydrogen Atom a Which has...Ch. 7 - Investigating Energy Levels Consider the...Ch. 7 - Consider two beams of the same yellow light....Ch. 7 - Prob. 7.26QPCh. 7 - One photon of green light has less than twice the...Ch. 7 - An atom in its ground state absorbs a photon...Ch. 7 - Three emission lines involving three energy levels...Ch. 7 - An atom emits yellow light when an electron makes...Ch. 7 - Which of the following particles has the longest...Ch. 7 - Imagine a world in which the rule for the l...Ch. 7 - Given the following energy level diagram for an...Ch. 7 - The following shapes each represent an orbital of...Ch. 7 - Radio waves in the AM region have frequencies in...Ch. 7 - Microwaves have frequencies in the range 109 to...Ch. 7 - Light with a wavelength of 478 nm lies in the blue...Ch. 7 - Calculate the frequency associated with light of...Ch. 7 - At its closest approach, Mercury is 77.3 million...Ch. 7 - The space probe Pioneer 11 was launched April 5,...Ch. 7 - The meter was defined in 1963 as the length equal...Ch. 7 - The second is defined as the time it takes for...Ch. 7 - What is the energy of a photon corresponding to...Ch. 7 - What is the energy of a photon corresponding to...Ch. 7 - The green line in the atomic spectrum of thallium...Ch. 7 - Molybdenum compounds give a yellowish-green flame...Ch. 7 - A particular transition of the rubidium atom emits...Ch. 7 - Selenium atoms have a particular transition that...Ch. 7 - An electron in a hydrogen atom in the level n = 5...Ch. 7 - Calculate the frequency of electromagnetic...Ch. 7 - The first line of the Lyman series of the hydrogen...Ch. 7 - What is the wavelength of the electromagnetic...Ch. 7 - Calculate the shortest wavelength of the...Ch. 7 - Calculate the longest wavelength of the...Ch. 7 - What is the difference in energy between the two...Ch. 7 - What is the difference in energy between the two...Ch. 7 - What is the wavelength of a neutron traveling at a...Ch. 7 - What is the wavelength of a proton traveling at a...Ch. 7 - At what speed must an electron travel to have a...Ch. 7 - At what speed must a neutron travel to have a...Ch. 7 - What is the de Broglie wavelength of a 149-g...Ch. 7 - What is the de Broglie wavelength of an oxygen...Ch. 7 - If the n quantum number of an atomic orbital is 4,...Ch. 7 - The n quantum number of an atomic orbital is 5....Ch. 7 - How many subshells are there in the M shell? How...Ch. 7 - How many subshells are there in the N shell? How...Ch. 7 - Give the notation (using letter designations for...Ch. 7 - Give the notation (using letter designations for...Ch. 7 - Explain why each of the following sets of quantum...Ch. 7 - State which of the following sets of quantum...Ch. 7 - The blue line of the strontium atom emission has a...Ch. 7 - The barium atom has an emission with wavelength...Ch. 7 - The energy of a photon is 2.70 1019 J. What is...Ch. 7 - The energy of a photon is 3.05 1019 J. What is...Ch. 7 - The photoelectric work function of a metal is the...Ch. 7 - The photoelectric work function for magnesium is...Ch. 7 - Light of wavelength 345 nm shines on a piece of...Ch. 7 - Light of wavelength 285 nm shines on a piece of...Ch. 7 - Calculate the wavelength of the Balmer line of the...Ch. 7 - Calculate the wavelength of the Balmer line of the...Ch. 7 - One of the lines in the Balmer series of the...Ch. 7 - A line of the Lyman series of the hydrogen atom...Ch. 7 - A hydrogen-like ion has a nucleus of charge +Ze...Ch. 7 - Prob. 7.84QPCh. 7 - An electron microscope employs a beam of electrons...Ch. 7 - Neutrons are used to obtain images of the hydrogen...Ch. 7 - What is the number of different orbitals in each...Ch. 7 - What is the number of different orbitals in each...Ch. 7 - List the possible subshells for the n = 6 shell.Ch. 7 - Prob. 7.90QPCh. 7 - Prob. 7.91QPCh. 7 - Prob. 7.92QPCh. 7 - Prob. 7.93QPCh. 7 - Prob. 7.94QPCh. 7 - What wavelength of electromagnetic radiation...Ch. 7 - AM radio stations broadcast at frequencies between...Ch. 7 - A particular microwave oven delivers 750 watts. (A...Ch. 7 - A ruby laser puts out a pulse of red light at a...Ch. 7 - The retina of the eye contains two types of...Ch. 7 - Ozone in the stratosphere absorbs ultraviolet...Ch. 7 - Prob. 7.101QPCh. 7 - The photoelectric work function of potassium is...Ch. 7 - Prob. 7.103QPCh. 7 - Prob. 7.104QPCh. 7 - Light of wavelength 1.03 107 m is emitted when an...Ch. 7 - A hydrogen atom in the ground stale absorbs a...Ch. 7 - Prob. 7.107QPCh. 7 - It requires 799 kJ of energy to break one mole of...Ch. 7 - The root-mean-square speed of an oxygen molecule,...Ch. 7 - Prob. 7.110QPCh. 7 - In X-ray fluorescence spectroscopy, a material can...Ch. 7 - For each of the following combinations of quantum...Ch. 7 - Prob. 7.113QPCh. 7 - In a hypothetical universe, the quantum numbers...Ch. 7 - The energy required to dissociate the Cl2 molecule...Ch. 7 - The energy required to dissociate the H2 molecule...Ch. 7 - A microwave oven heats by radiating food with...Ch. 7 - Warm objects emit electromagnetic radiation in the...Ch. 7 - Light with a wavelength of 425 nm fell on a...Ch. 7 - Light with a wavelength of 405 nm fell on a...Ch. 7 - Prob. 7.121QPCh. 7 - When an electron is accelerated by a voltage...Ch. 7 - Prob. 7.123QPCh. 7 - The table below is partially completed for...
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