CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
14th Edition
ISBN: 9780134863016
Author: Brown
Publisher: PEARSON
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Chapter 8, Problem 69E
Using Table 8.3, estimate
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Use bond energy values to estimate ΔH for the following reaction in the gas phase.
4 NH3(g) + 3 O2(g) --> 2 N2(g) + 6 H2O(g)
Calculate ΔH (in kJ/mol) for the reaction described by the equation.
6 NH3(g) + 5 O3(g) → 6 NO(g) + 9 H2O(l)
If the enthalpy change for the reaction below is 46.72
kJ, how many grams of ammonia can
be produced if 50.7 kJ of heat energy are provided to
the reaction?
4 NO + 6 H2O --> 4 NH3 + 5 O2
Chapter 8 Solutions
CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
Ch. 8.2 - Which of the these elements is most likely to from...Ch. 8.2 - Prob. 8.1.2PECh. 8.2 - Which of the following bond is the most polar? H-F...Ch. 8.2 - Prob. 8.2.2PECh. 8.3 - Prob. 8.3.1PECh. 8.3 - Prob. 8.3.2PECh. 8.4 - Which of the following bonds is the most polar? a....Ch. 8.4 - Which of the following bonds is most polar: S-Cl,...Ch. 8.4 - Prob. 8.5.1PECh. 8.4 - The dipole moment of chlorine monofluoride,...
Ch. 8.5 - Which of the these molecules has a Lewis structure...Ch. 8.5 -
How many valence electrons should appear in the...Ch. 8.5 - Compare the lewis symbol for neon the structure...Ch. 8.5 - Prob. 8.7.2PECh. 8.5 - Prob. 8.8.1PECh. 8.5 - Prob. 8.8.2PECh. 8.5 - Prob. 8.9.1PECh. 8.5 - Prob. 8.9.2PECh. 8.6 - Which of the statements about resonance is true?...Ch. 8.6 - Prob. 8.10.2PECh. 8.7 - Prob. 8.11.1PECh. 8.7 - Prob. 8.11.2PECh. 8 - Prob. 1DECh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - A portion of a two-dimensional "slab" of NaCl(s)...Ch. 8 - Prob. 4ECh. 8 - Prob. 5ECh. 8 - Incomplete Lewis structures for the nitrous acid...Ch. 8 - Prob. 7ECh. 8 - Prob. 8ECh. 8 - Prob. 9ECh. 8 - True or false: The hydrogen atom is most stable...Ch. 8 - Consider the element silicon, Si. Write its...Ch. 8 - Write the electron configuration for the element...Ch. 8 - Prob. 13ECh. 8 - What is the Lewis symbol for each of the following...Ch. 8 - Using Lewis symbols, diagram the reaction between...Ch. 8 - Use Lewis symbols to represent the reaction that...Ch. 8 - Predict the chemical formula of the ionic compound...Ch. 8 - Prob. 18ECh. 8 - Prob. 19ECh. 8 - Prob. 20ECh. 8 - Is lattice energy usually endothermic or...Ch. 8 - NaCI and KF have the same crystal structure. The...Ch. 8 - Prob. 23ECh. 8 - Prob. 24ECh. 8 - Consider the ionic compounds KF, NaCl, NaBr, and...Ch. 8 - Which of the following trends in lattice energy is...Ch. 8 - Energy is required to remove two electrons from Ca...Ch. 8 - Prob. 28ECh. 8 - Use data from Appendix C, Figure 7.10, and Figure...Ch. 8 - Prob. 30ECh. 8 - Prob. 31ECh. 8 - Prob. 32ECh. 8 - Using Lewis symbols and Lewis structures, diagram...Ch. 8 - Use Lewis symbols and Lewis structures to diagram...Ch. 8 - Prob. 35ECh. 8 - Prob. 36ECh. 8 - Prob. 37ECh. 8 - What is the trend in electronegativity going from...Ch. 8 - Prob. 39ECh. 8 - By referring only to the periodic table, select...Ch. 8 - which of the following bonds are polar? B-F,...Ch. 8 - Arrange the bonds in each of the following sets in...Ch. 8 - Prob. 43ECh. 8 - Prob. 44ECh. 8 - In the following pairs of binary compounds,...Ch. 8 - Prob. 46ECh. 8 - Prob. 47ECh. 8 - Write Lewis structures for the following: H2CO...Ch. 8 - Prob. 49ECh. 8 - Draw the dominant Lewis structure for the...Ch. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - Prob. 52ECh. 8 - Prob. 53ECh. 8 - Prob. 54ECh. 8 - Prob. 55ECh. 8 - Prob. 56ECh. 8 - Prob. 57ECh. 8 - Prob. 58ECh. 8 - Prob. 59ECh. 8 - Prob. 60ECh. 8 - Prob. 61ECh. 8 - 8.62 For Group 3A-7A elements in the third row of...Ch. 8 - Draw the Lewis structures for each of the...Ch. 8 - Prob. 64ECh. 8 - In the vapor phase, BeCl2exists as a discrete...Ch. 8 -
8.66
Describe the molecule xenon trioxide, XeO3,...Ch. 8 -
8.67 There are many Lewis structures you could...Ch. 8 - Prob. 68ECh. 8 - Using Table 8.3, estimate H for each of the...Ch. 8 - Using Table 8.3, estimate H for the following...Ch. 8 - State whether each of these statements is true or...Ch. 8 - Prob. 72ECh. 8 - Prob. 73ECh. 8 - Prob. 74ECh. 8 - Prob. 75ECh. 8 - Prob. 76ECh. 8 - A new compound is made that has a C-C bond length...Ch. 8 - A new compound is made that has an N-N bond length...Ch. 8 - Prob. 79AECh. 8 - Prob. 80AECh. 8 - An ionic substance of formula MX has a lattice...Ch. 8 - Prob. 82AECh. 8 - Prob. 83AECh. 8 - Prob. 84AECh. 8 - Consider the collection of nonmetallic elements 0,...Ch. 8 - The substance chlorine monoxide, CIO(g), is...Ch. 8 -
[8.87]
a. using the electronegativities of Br...Ch. 8 - Prob. 88AECh. 8 - Although I3- is a known ion, F3- is not. a. Draw...Ch. 8 - Calculate the formal charge on the indicated atom...Ch. 8 - The hypochlorite ion, CIO- , is the active...Ch. 8 - Prob. 92AECh. 8 - a. Triazine, C3 H3N3, is like benzene except that...Ch. 8 - Prob. 94IECh. 8 - Prob. 95IECh. 8 - Prob. 96IECh. 8 - Prob. 97IECh. 8 - Prob. 98IECh. 8 - Prob. 99IECh. 8 - Prob. 100IECh. 8 - Prob. 101IECh. 8 - Prob. 102IECh. 8 -
8.103 The compound chloral hydrate, known in...Ch. 8 - Barium azide is 62.04% Ba and 37.96% N. Each azide...Ch. 8 - Acetylene (C2H2) and nitrogen (N2) both contain a...Ch. 8 - Prob. 106IECh. 8 - Prob. 107IECh. 8 -
8.108 Formic acid has the chemical formula...Ch. 8 - Prob. 109IECh. 8 - Prob. 110IE
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- hat is the enthalpy change for a process? Is enthalpy a state function? In what experimental apparatus are enthalpy changes measured?arrow_forwardGiven the following data: NO2(g) NO(g) + O(g)H = 233 kJ 2O3(g) 3O2(g)H = 427 kJ NO(g) + O3(g) NO2(g) + O2(g)H = 199 kJ Calculate the bond energy for the O2 bond, that is, calculate H for: O2(g) 2O(g)H = ?arrow_forwardEstimate H for the following reactions using bond energies given in Table 8.5. 3CH2=CH2(g) + 3H2(g) 3CH2CH3(g) The enthalpies of formation for C6H6(g) and C6H12 (g) are 82.9 and 90.3 kJ/mol. respectively. Calculate H for the two reactions using standard enthalpies of formation from Appendix 4. Account for any differences between the results obtained from the two methods.arrow_forward
- A commercial process for preparing ethanol (ethyl alcohol), C2H5OH, consists of passing ethylene gas. C2H4, and steam over an acid catalyst (to speed up the reaction). The gas-phase reaction is Use bond enthalpies (Table 9.5) to estimate the enthalpy change for this reaction when 37.0 g of ethyl alcohol is produced.arrow_forwardThe standard enthalpies of formation for S(g), F(g), SF4(g), and SF6(g) are +278.8, +79.0, 775, and +1209 KJ/mol, respectively. a. Use these data to estimate the energy of an SF bond. b. Compare your calculated value to the value given in Table 3-3. What conclusions can you draw? c. Why are the Hf values for S(g) and F(g) not equal to zero, since sulfur and fluorine are elements?arrow_forwardUse bond enthalpies in Table 5.4 to estimate ΔH for each ofthe following reactions:arrow_forward
- If the enthalpy change for the reaction below is 46.72 kJ, how many grams of ammonia canbe produced if 50.7 kJ of heat energy are provided to the reaction? 4 NO + 6 H2O --> 4 NH3 + 5 O2arrow_forward7:36 Question 22 of 25 Cl₂ → 2Cl(g) Cl₂ is a stable diatomic molecule. It can be decomposed to form two Cl atoms as shown below. Predict the change in enthalpy (AH) of this reaction. A) AH is (-); endothermic B) AH is (+); endothermic C) AH is (-); exothermic D) AH is (+); exothermic Submit E) AH = 0; thermoneutral Tap here or pull up for additional resourcesarrow_forwardCalculate the change in enthalpy (in kJ/mol) for the following reaction using the data provided. 4C2H5NO2(s) + 9O2(g) --> 8CO2(g) + 10H2O(l) + 2N2(g) ΔH°rxn = ? ΔH°f = C2H5NO2(s) = –513.4 kJ/mol ΔH°f = H2O(g) = -241.8 kJ/mol ΔH°f = H2O(l) = –294.2 kJ/mol ΔH°f = CO2(g) = –387.9 kJ/mol Report your answer to 1 decimal placearrow_forward
- 3. Chemical Formulas and Thermodynamics (continued) From the bond energy data given below, (a) write a balanced equation for the formation of C. liquid formic acid from its elements (solid carbon, hydrogen gas and oxygen gas) and (b) calculate its reaction energy in kJ. 415 kJ/mol 345 kl/mol 460 kJ/mol 490 kJ/mol 436 kJ/mol C-H O-H C-o 360 kl/mol O=0 800 kJ/mol 799 kl/mol C-C C=C H-H C=0 a. Write the equation for formation of Formic Acid from its elements: b. Show your AHrmx calculations. It may help to review the Lewis Structure of formic acid on page 4. Box your final answer.arrow_forwardFor an unidentified nonmetal element X, the following chemical equation was determined and measured: XC12(g) + 2 Cl 2(g) --> XC16(g) AHrxn = -374.60 kJ Based on this information, what would be the estimated average bond energy, in kJ/mol, of an X-Cl bond?arrow_forwarda) The following reaction occurs in an open beaker: C2H5OH (g) ---> C2H4(g) + H2O (g) {Bond Energy (kJ/mol): C-H = 415 ; C-C = 345 ; C-O = 350 ; O-H = 464 ; C=C = 611}i) Calculate the ΔH0rxn for this reaction from the given bond energies. kJ ii) Is this reaction an open, closed or isolated system? iii) Would you feel hot or cold if you were near this reaction when it occurred? This is because (choose from I - V) I. the reaction is exothermic and absorbs energy from the surroundings. II. the reaction is exothemic and releases energy to the surroundings. III. the reaction is endothermic and absorbs thermal energy from the surroundings. IV. the reaction is endothermic and loses heat to the surroundings. V. the reaction produces steam which contains a lot of heat.arrow_forward
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