INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR
5th Edition
ISBN: 9781264125609
Author: BAUER
Publisher: MCG
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Chapter 14, Problem 25QP
Determine the oxidation number of each element in the following compounds.
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In the normal hydrogen electrode, the balance potential difference in the interface is 0 and the current flow across the electrode when the interface potential difference is +5 mV. Explain briefly. Is the overvoltage 5 mV?
In the normal hydrogen electrode, the balance potential difference in the interface is 0 mV, the maximum potential is 5 mV. Explain briefly.
utron
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(b) Atoms are said to be electrically neutral. Explain.
(c)
Distinguish
between the following:
(i) Atomic number and mass number.
(ii) Mass number and relative atomic mass.
2. An isotope Q, has 18 neutrons a mass number of 34.
(a) (i) Draw the atomic structure of Q.
(ii) Write its electron arrangement
(b) To which period and group does Q belong? Explain your answer.
(c) How does Q form its ion? Explain.
3. (a) Determine the relative atomic mass of the following elements =
compositions occur in the proportions given.
(i) Neon
20
21
22.
Ne (90.92%), 10Ne (0.26%), and 10Ne (8.82%)
(ii) Argon
36
38
40
18 Ar (0.34%), 18 Ar (0.06%) and 18 Ar (99.6%)
Chapter 14 Solutions
INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR
Ch. 14 - Prob. 1QCCh. 14 - Prob. 2QCCh. 14 - How do chemical reactions provide electricity in...Ch. 14 - Prob. 4QCCh. 14 - Prob. 5QCCh. 14 - How do oxidation-reduction reactions generate...Ch. 14 - Prob. 7QCCh. 14 - Prob. 1PPCh. 14 - Assign oxidation numbers to each element in the...Ch. 14 - Prob. 3PP
Ch. 14 - Cadmium reacts with nickel(II) nitrate according...Ch. 14 - The reaction that occurs in most camera batteries...Ch. 14 - Prob. 6PPCh. 14 - Balance the following equation that occurs in...Ch. 14 - Prob. 8PPCh. 14 - Prob. 9PPCh. 14 - Prob. 1QPCh. 14 - Prob. 2QPCh. 14 - Prob. 3QPCh. 14 - Why is oxidation always coupled with reduction?Ch. 14 - Prob. 5QPCh. 14 - How do you know when something is reduced?Ch. 14 - When a strip of magnesium metal is placed in an...Ch. 14 - When a strip of nickel metal is placed in an...Ch. 14 - Consider the following reaction:...Ch. 14 - Consider the following reaction:...Ch. 14 - Prob. 11QPCh. 14 - Prob. 12QPCh. 14 - Indicate the oxidation number of each element in...Ch. 14 - Indicate the oxidation number of each element in...Ch. 14 - Prob. 15QPCh. 14 - Prob. 16QPCh. 14 - What is the oxidation number of phosphorus in each...Ch. 14 - Determine the oxidation number of chlorine in each...Ch. 14 - Indicate the oxidation number of phosphorus in...Ch. 14 - Determine the oxidation number of iodine in each...Ch. 14 - The ion shown has a charge of 2. What are the...Ch. 14 - The ion shown has a charge of 1. What are the...Ch. 14 - Prob. 23QPCh. 14 - Indicate the oxidation number of chromium in each...Ch. 14 - Determine the oxidation number of each element in...Ch. 14 - Determine the oxidation number of each element in...Ch. 14 - Determine the oxidation number of each element in...Ch. 14 - Prob. 28QPCh. 14 - Prob. 29QPCh. 14 - Prob. 30QPCh. 14 - Under certain conditions, nitrogen gas reacts with...Ch. 14 - Under certain conditions, solid carbon reacts with...Ch. 14 - Consider the following reaction:...Ch. 14 - In the following oxidation-reduction reactions,...Ch. 14 - In the following oxidation-reduction reactions,...Ch. 14 - Draw a diagram of a voltaic cell that corresponds...Ch. 14 - Draw a diagram of a voltaic cell that corresponds...Ch. 14 - The figure shows a molecular-level representation...Ch. 14 - The figure shows a molecular-level representation...Ch. 14 - The reaction that occurs in a lead-acid battery is...Ch. 14 - The reaction that occurs in a lead-acid battery is...Ch. 14 - The nickel-cadmium battery is used in portable...Ch. 14 - The zinc-silver oxide battery, although expensive,...Ch. 14 - Balance the following half-reactions....Ch. 14 - Balance the following half-reactions....Ch. 14 - For each of the following, write balanced...Ch. 14 - For each of the following, write balanced...Ch. 14 - Prob. 49QPCh. 14 - Prob. 50QPCh. 14 - Balance the following half-reactions, adding...Ch. 14 - Balance the following half-reactions, adding...Ch. 14 - Balance the following half-reactions, adding...Ch. 14 - Balance the following half-reactions, adding...Ch. 14 - Prob. 55QPCh. 14 - Complete and balance the following...Ch. 14 - Complete and balance the following...Ch. 14 - Complete and balance the following...Ch. 14 - Denitrification occurs when nitrogen in the soil...Ch. 14 - Prob. 60QPCh. 14 - Consider the partially labelled voltaic cell...Ch. 14 - Consider the partially labelled voltaic cell...Ch. 14 - Using the activity series in Figure 14.22, place...Ch. 14 - Using the activity series in Figure 14.22, place...Ch. 14 - What is electrolysis?Ch. 14 - Describe what happens at each electrode during the...Ch. 14 - Prob. 67QPCh. 14 - Prob. 68QPCh. 14 - Prob. 69QPCh. 14 - Prob. 70QPCh. 14 - Prob. 71QPCh. 14 - Prob. 72QPCh. 14 - Prob. 73QPCh. 14 - Prob. 74QPCh. 14 - If the chrome placing on an automobile bumper is...Ch. 14 - Prob. 76QPCh. 14 - Prob. 77QPCh. 14 - Prob. 78QPCh. 14 - Prob. 79QPCh. 14 - Prob. 80QPCh. 14 - Prob. 81QPCh. 14 - Prob. 82QPCh. 14 - Prob. 83QPCh. 14 - Prob. 84QPCh. 14 - Prob. 85QPCh. 14 - Prob. 86QPCh. 14 - Prob. 87QPCh. 14 - Prob. 88QPCh. 14 - Prob. 89QPCh. 14 - Prob. 90QPCh. 14 - Prob. 91QPCh. 14 - Prob. 92QPCh. 14 - Prob. 93QPCh. 14 - Prob. 94QPCh. 14 - Prob. 95QPCh. 14 - Prob. 96QPCh. 14 - Prob. 97QPCh. 14 - Prob. 98QPCh. 14 - Prob. 99QPCh. 14 - Prob. 100QPCh. 14 - Prob. 101QPCh. 14 - Prob. 102QPCh. 14 - Prob. 103QPCh. 14 - Prob. 104QPCh. 14 - Prob. 105QPCh. 14 - Prob. 106QPCh. 14 - Prob. 107QPCh. 14 - Prob. 108QPCh. 14 - Prob. 109QPCh. 14 - Prob. 110QP
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- In the normal hydrogen electrode, the balance potential difference in the interface is this, the maximum potential is 5 mV. Explain briefly.arrow_forwardThe electrode balance potential is -0.118 V and the interface potential difference is +5 mV. The overvoltage n will be 0.005 - (-0.118) = 0.123 V. Is it correct?arrow_forwardIn the electrode Pt, H2(1 atm) | H+(a=1), if the electrode balance potential is -0.118 V and the interface potential difference is +5 mV. The current voltage will be 0.005 - (-0.118) = 0.123 V ¿Correcto?arrow_forward
- In the electrode Pt, H2(1 atm) | H+(a=1) at 298K is 0.79 mA cm-2. If the balance potential of the electrode is -0.118 V and the potential difference of the interface is +5 mV. Determine its potential.arrow_forwardIn one electrode: Pt, H2(1 atm) | H+(a=1), the interchange current density at 298K is 0.79 mA·cm-2. If the voltage difference of the interface is +5 mV. What will be the correct intensity at pH = 2?. Maximum transfer voltage and beta = 0.5.arrow_forwardIn a Pt electrode, H2(1 atm) | H+(a=1), the interchange current density of an electrode is 0.79 mA cm-2. ¿Qué corriente flow across the electrode of área 5 cm2 when the difference in potential of the interface is +5 mV?.arrow_forward
- If the current voltage is n = 0.14 V, indicate which of the 2 voltage formulas of the ley of Tafel must be applied i a a) == exp (1-B). xp[(1 - ß³): Fn Fn a b) == exp B RT RTarrow_forwardIf the current voltage is n = 0.14 V. Indicate which of the 2 formulas must be applied a) = a T = i exp[(1 - p) F Fn Fn b) i==exp B RTarrow_forwardTopic: Photochemistry and Photophysics of Supramoleculesarrow_forward
- Two cations that exchange an electron in an interface, the exchange density is worth 1.39 mA/cm2 and the current density is worth 15 mA/cm2 at 25°C. If the overvoltage is 0.14 V, calculate the reaction rate and symmetry factor. Data: R = 8,314 J mol-1 k-1: F = 96500 Carrow_forwardWith the help of the Tafel line, it is estimated that the interchange density of the VO2+/VO2+ system on the carbon paper has a value of 3 mA cm-2. Calculate a) the current density if the voltage has a value of 1.6 mV and the temperature is 25°C. b) the beta value of the anódico process if the Tafel pendulum is 0.6 V at 25°C. Data: R = 8.314 JK-1mol-1, y F = 96485 C mol-1.arrow_forwardApply the NANSTE law to the MnO4- + 8H+ + 5e- ⇄ Mn2+ + 4H2Oarrow_forward
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