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and
cis
trans
Explain why cis-bicyclo[4.1.0]heptane is more stable
than its trans isomer. Answer:
Calculate the energy difference between the two
isomers. Answer:
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- Given that ?a for HCN is 6.2×10−10 at 25 °C, what is the value of ?b for CN− at 25 °C? ?b= Given that ?b for CH3CH2NH2 is 6.3×10−4 at 25 °C, what is the value of ?a for CH3CH2NH+3 at 25 °C? ?a=Calculate the ΔG° rxn using the following information. 2 HNO 3( aq) + NO( g) → 3 NO 2( g) + H 2O( l) ΔG° rxn = ? ΔG° f (kJ/mol) -110.9 87.6 51.3 -237.1 -51.0 kJ -54.5 kJ +51.0 kJ -171.1 kJ -162.5 kJEstimate the heat released when ethene(CH2=CH2) reacts with HBr to giveCH3CH2Br. Bond enthalpies areC-H : 412 kJ/mol; C-C : 348 kJ/mol;C=C : 612 kJ/mol; C-Br : 276 kJ/mol;Br-Br : 193 kJ/mol; H-Br : 366 kJ/mol. Choose the correct answer:1. 1036 kJ/mol2. 58 kJ/mol3. 424 kJ/mol4. 200 kJ/mol5. 470 kJ/mol
- C2H6 delta Hf= -84kj, O2 delta Hf= 438kj, CO2 delta Hf= -393.5kJ , H2O deltaHf= -241.8KJ 2. C25H52 delta Hf= -559.33, O2 delta Hf= 438kj, CO2 delta Hf= -393.5kj, H2O delta Hf =-241.8KJ Give me answer of 1 and 2The potential energy of a CH3 group in ethane as it is rotated around the C-C bond can be written V= 1/2V0(1 +cos φ), where φ is the azimuthal angle as shown and V0 = 11.6 kJ mol-1. (a) What is the change in potential energy between the trans and fully eclipsed conformations? (b) Show that for smal lvariations in angle, the torsional (twisting) motion around the C-C bond can be expected to be that of a harmonic oscillator. (d) Estimate the vibrational frequency of this torsional oscil lation.drop down for the first selection is NH4Cl and CH3COOH and the second drop down is NH3 and NaCH3COOH
- Calculate the ΔG°rxn using the following information. 2 H2S(g) + 3 O2(g) → 2 SO2(g) + 2 H2O(g) ΔG°rxn = ? ΔG°f (kJ/mol) -33.4 -300.1 -228.6 Group of answer choices +990.6 kJ -1124 kJ +562.1 kJ +72.0 kJ -990.6 kJWhat is the deltaG f for NO2(g) at 25C? NO2(g) + N2O(g) <-> 3 NO(g) delta Hf kJ/mol 33.2 81.6 91.3 S J/mol K 240.1. 220.0 210.8 delta Gf kJ/mol ? 103.7 87.6 (answer in kJ, please)Which of the following two conformations of trans-3-methylcyclohexanol is more stable? Use the strain energy increments in the table below estimate the energy difference (a positive number) between them.
- Identify the relationship between each pair of structures as: (i) identical, (ii) constitutional, (iii) conformational, (iv) enantiomers, or (v) diastereomers. Choose only one label per pair of structures. If there is any type of "proof" work please provide. This section of practice problems has been killing me. Thank you in advance.Calculate the g flip and report answer in kcal/mol What conformation is more stable? A or B?Which molecule(s) can exist as cis and trans isomers? Choose more than one answer if appropriate. Answer is D) 1,2-dimethylcyclopentane Can you explain to me that why is the 1,2-dimethylcyclopentane?