77) Answer is 485 KJ/mol
∆H = ∆H(bond broken) - ∆H(bond formed)
∆H = ∆H(C=C) + ∆H(F-F) - ∆H(C-C) -2∆H(C-F)
-549 = 614 + 154 - 347 - 2∆H(C-F)
2∆H(C-F) = 614+154-347+549 = 970 KJ
∆H(C-F) = 970/2 = 485 KJ/mol
85) According to octet rule each atom contain 8 electrons in valence shell.
A) F2
B) O2
C) CO
D) CH4
E) NH3
F) H2O
G) HF
Monday: Kead sections 8.10-8.11: Ch.8 #77: 7. Consider the following reaction: H H C=C (g) +...
To answer the questions, interpret the following Lewis diagram for CH H-C-H 1. For the central carbon atom: The number of non-bonding electrons The number of bonding electrons The total number of electrons 2. The central carbon atom A. obeys the octet rule. B. has more than an octet. C. has less than an octet. Submit Answer 2 more group attempts remaining Retry Entire Group Review Topics) Use the References to access important vals To answer the questions, interpret the...
Consider the following reaction. CH,(8) + 30,(8) 200,(g) + 2 H2O(g) Compound C, H.() 0,(g) CO2(g) H2O(g) AH; (kJ/mol) 52.4 0 -393.5 -241.8 What is the AH of the reaction? -687.7 kJ/mol -1323.0 kJ/mol -1218.2 kJ/mol 1323.0 kJ/mol
(2). Consider benzene in the gas phase, C&H(g). Use the heat of formation, AH, values below to answer the questions. (20 points дня (кJ/mo) Substance H(g) C(g) 217.94 718.4 82.9 (8°HӘ (a) What is the standard enthalpy change for the reaction that represents breaking all the bonds in gaseous benzene, CHg)? (6 points) (b) What is the chemical equation for the reaction that corresponds to breaking just the carbon-carbon bonds in gaseous benzene, CeH6()? Indicate the phase of each species...
99 Write Lewis structures that obey the octet rule for the follow- ing species. Assign the formal charge for each central atom. a. POCI b. SO c. CIO4 d. PO3 es e. SO2C12 f. XeO4 n g. CIO3 h. NO3-
(2). Consider benzene in the gas phase, CaH&(g). Use the heat of formation, AH, values below to answer the questions. (20 points) дня (/mо) Substance H(g) C(g) С.Н.A(9) 217.94 718.4 82.9 (a) What is the standard enthalpy change for the reaction that represents breaking all the bonds in gaseous benzene, C.Ha(g)? (6 points) (b) What is the chemical equation for the reaction that corresponds to breaking just the carbon-carbon bonds in gaseous benzene, CH6(? Indicate the phase of each species...
7. Consider the following reaction: H,(8)+CO,(8)=1,0(g)+CO(g) The value of the equilibrium constant K, for the reaction is 0.534 at 700°C. What is the value of K, for this reaction at 298 K? (5 points) (AH; (H20) = -241.8, AH;(CO) = -110.5, AH;(CO2) = -393.5 kJ/mol)
The answer is D, but I cannot figure out why. Benzene, C6H6, has two resonance structures: H H -0 Η H CH H Given: 2 C6H6(g) + 15 O2(g) → 12 CO2(g) + 6 H2O(g); AHıxa = -6340 kJ Use the provided average bond dissociation enthalpies (D) to estimate the carbon-carbon bond dissociation enthalpy in benzene. Bond D(kJ/mol) A. 307 kJ/mol C-H 413 B. 446 kJ/mol C–C 348 C. 481 kJ/mol C=C 614 D. 508 kJ/mol O=0 498 E. 543...
5. (15 points) Estimate the C-C bond energy from the provided information below: CH.(g) + H2(g) → CH.(g) AH®rxn-- 137 kJ Bond Bond Energy (kJ/mol) C-C611 C-H 414 C=C 837 H-H 436
WORKSHEET Data Sheet: Molecular Models: Lewis Structures and Molecular Geometry Student: Lab Partner: Instructor and Section: Date: Question 1 For each of the following molecules, draw the Lewis structure and fill in the table as indicated. It is advisable to work in pencil. A dash in the table means that item is not relevant for that molecule. Formula # Vale Lewis Structure Sketch of Model Molecular Bond Geometry Angle F2 N2 H20 PF, CO CHA HCN CH 63 O Lab_Report_9.docx.......
1. Which one of the following is most likely to be an ionic compound? A) CaCl2 B) CO2 C) CS2 D) SO2 E) OF2 2. Which one of the following ionic solids would have the largest lattice energy? A) NaCl B) NaF C) CaBr2 D) CsI E) CaCl2 3. Calculate the energy change for the reaction K(g) + I(g) → K+(g) + I – (g) given the following ionization energy (IE) and electron affinity (EA) values. IE K: 419 kJ/mol...