Chemical Principles
8th Edition
ISBN: 9781305581982
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 9, Problem 2DQ
What is meant by the term lower in energy? Which is lower in energy, a mixture of hydrogen and oxygen gases or liquid water? How do you know? Which of the two is more stable? How do you know?
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5. A buffer consists of 0.45 M NH, and 0.25 M NH-CI (PK of NH 474) Calculate the pH of the butter. Ans: 9.52
BAS
PH-9.26 +10g (10.95))
14-4.59
PH=4.52
6. To 500 ml of the buffer on #5 a 0.20 g of sample of NaOH was added
a Write the net ionic equation for the reaction which occurs
b. Should the pH of the solution increase or decrease sightly?
Calculate the pH of the buffer after the addition Ans: 9.54
Explain the inductive effect (+I and -I) in benzene derivatives.
The inductive effect (+I and -I) in benzene derivatives, does it guide ortho, meta or para?
Chapter 9 Solutions
Chemical Principles
Ch. 9 - Objects placed together eventually reach the same...Ch. 9 - What is meant by the term lower in energy? Which...Ch. 9 - A fire is started in a fireplace by striking a...Ch. 9 - Liquid water turns to ice. Is this process...Ch. 9 - Consider the following statements: “Heat is a form...Ch. 9 - Prob. 6DQCh. 9 - Explain why oceanfront areas generally have...Ch. 9 - Predict the signs of q and w for the process of...Ch. 9 - Hess’s law is really just another statement of the...Ch. 9 - Prob. 10DQ
Ch. 9 - Prob. 11DQCh. 9 - Prob. 12DQCh. 9 - Prob. 13DQCh. 9 - Prob. 14DQCh. 9 - Prob. 15ECh. 9 - Consider the following potential energy diagrams...Ch. 9 - Consider an airplane trip from Chicago, Illinois,...Ch. 9 - Consider the following diagram when answering the...Ch. 9 - Assuming gasoline is pure C8H18(l) , predict the...Ch. 9 - Prob. 20ECh. 9 - Prob. 21ECh. 9 - A piston performs work of 210.Latm on the...Ch. 9 - A system undergoes a process consisting of the...Ch. 9 - Calculate the internal energy change for each of...Ch. 9 - Prob. 25ECh. 9 - Prob. 26ECh. 9 - One mole of H2O(g) at 1.00atm and 100.C occupies a...Ch. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 30ECh. 9 - Prob. 31ECh. 9 - Are the following processes exothermic or...Ch. 9 - Prob. 33ECh. 9 - Prob. 34ECh. 9 - Prob. 35ECh. 9 - Prob. 36ECh. 9 - Prob. 37ECh. 9 - For the following reactions at constant pressure,...Ch. 9 - Calculate the energy required to heat 1.00kg of...Ch. 9 - Calculate q , w , E , and H for the process in...Ch. 9 - Consider 111J of heat added to 30.3g of Ne on STP...Ch. 9 - Consider a sample containing 2.00moles of a...Ch. 9 - Prob. 43ECh. 9 - The specific heat capacity of silver is...Ch. 9 - Consider the substances in Table9.3 . Which...Ch. 9 - A 150.0-g sample of a metal at 75.0C is added to...Ch. 9 - Prob. 47ECh. 9 - Prob. 48ECh. 9 - Prob. 49ECh. 9 - Prob. 50ECh. 9 - In a coffee cup calorimeter, 50.0mL of 0.100MAgNO3...Ch. 9 - In a coffee cup calorimeter, 100.0mL of 1.0MNaOH...Ch. 9 - A coffee cup calorimeter initially contains 125g...Ch. 9 - In a coffee cup calorimeter, 1.60g of NH4NO3 is...Ch. 9 - Prob. 55ECh. 9 - Consider the reaction...Ch. 9 - The heat capacity of a bomb calorimeter was...Ch. 9 - The combustion of 0.1584g benzoic acid increases...Ch. 9 - Prob. 59ECh. 9 - Calculate w and E when 1mole of a liquid is...Ch. 9 - Prob. 61ECh. 9 - Calculate H for the reaction...Ch. 9 - Given the following data:...Ch. 9 - Given the following data:...Ch. 9 - Prob. 65ECh. 9 - Given the following data:...Ch. 9 - Combustion reactions involve reacting a substance...Ch. 9 - Given the following data: 2O3(g)3O2(g)H=427kJ...Ch. 9 - Prob. 69ECh. 9 - Prob. 70ECh. 9 - Prob. 71ECh. 9 - The combustion of methane can be represented as...Ch. 9 - Prob. 73ECh. 9 - Prob. 74ECh. 9 - Calculate H for each of the following reactions...Ch. 9 - The reusable booster rockets of the space shuttle...Ch. 9 - Prob. 77ECh. 9 - Prob. 78ECh. 9 - At 298K , the standard enthalpies of formation for...Ch. 9 - Prob. 80ECh. 9 - Prob. 81ECh. 9 - The standard enthalpy of combustion of ethene gas...Ch. 9 - Prob. 83ECh. 9 - Prob. 84ECh. 9 - Prob. 85ECh. 9 - Assume that 4.19106kJ of energy is needed to heat...Ch. 9 - Prob. 87ECh. 9 - Prob. 88ECh. 9 - Prob. 89ECh. 9 - Some automobiles and buses have been equipped to...Ch. 9 - Consider the following cyclic process carried out...Ch. 9 - Determine E for the process H2O(l)H2O(g) at 25C...Ch. 9 - The standard enthalpy of formation of H2O(l) at...Ch. 9 - Prob. 94AECh. 9 - Prob. 95AECh. 9 - Prob. 96AECh. 9 - Prob. 97AECh. 9 - Prob. 98AECh. 9 - Prob. 99AECh. 9 - Prob. 100AECh. 9 - Prob. 101AECh. 9 - Prob. 102AECh. 9 - Prob. 103AECh. 9 - Prob. 104AECh. 9 - Prob. 105AECh. 9 - High-quality audio amplifiers generate large...Ch. 9 - Prob. 107AECh. 9 - Prob. 108AECh. 9 - Prob. 109AECh. 9 - Prob. 110AECh. 9 - Prob. 111AECh. 9 - Prob. 112AECh. 9 - Prob. 113AECh. 9 - Prob. 114AECh. 9 - Prob. 115AECh. 9 - The heat required to raise the temperature from...Ch. 9 - Prob. 117CPCh. 9 - Prob. 118CPCh. 9 - The heat of vaporization of water at the normal...Ch. 9 - Consider the following reaction at 248C and...Ch. 9 - Prob. 121CPCh. 9 - Prob. 122CPCh. 9 - Prob. 123CPCh. 9 - You have a 1.00-mole sample of water at -30.C ,...Ch. 9 - Prob. 125MPCh. 9 - A gaseous hydrocarbon reacts completely with...
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- 19.57 Using one of the reactions in this chapter, give the correct starting material (A-L) needed to produce each structure (a-f). Name the type of reaction used. (b) ہ مرد (d) HO (c) དང་ ་་ཡིན་ད་དང་ (f) HO Br B D of oli H J Br K C 人 ↑arrow_forwardInductive effect (+I and -I) in benzene derivatives.arrow_forward7. Helparrow_forward
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