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Please draw all possible resonance structures, provided with an explanation
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- Which of the following are not related as resonance structures? OH (A) `NH. NH (B) ОН (C) CH2 (D)Calculate the Enthalpy Change (ΔH) from average bond energies, which have been listed below in KJ/mol, for the following reaction and identify the nature of the reaction: CH3COOH + CH3OH → CH3COOCH3 + H2O [C‒H: 413; C‒C: 347; C=O: 745; C=C: 614; Cl‒Cl: 239, C‒O: 358; O‒H: 467]Change ethane into 1,2-ethanediol (HOCH2CH2OH) by removing one hydrogen atom from each carbon atom and replacing with a hydroxide (-OH) group. Draw a Lewis structure for 1,2-ethanediol.
- Using the bond energies provided, calculate the enthalpy of the reaction (∆Hrxn, in kJ) for the combustion of methanol shown below. CH3OH(l) +3/2 O2 (g) → CO2 (g) + 2 H2O(g)The arrangement of atoms in several biologically important molecules is given here. Complete the Lewis structures of these molecules by adding multiple bonds and lone pairs. Do not add any more atoms. (a) the amino acid serine: 車 0-H H-C-H H Н—N—с—с—о—н H (b) нон H-N-C-N-H (c) pyruvic acid: ноо н—с—с—с—о—н H. (d) uracil: H (e) carbonic acid: H-0-C-0-HMethyl isocyanate, CH3 -N= C = O, is used in the industrial synthesis of a type of pesticide and herbicide known as a carbamate. As a historical note, an industrial accident in Bhopal, India, in 1984 resulted in leakage of an unknown quantity of this chemical into the air. An estimated 200,000 people were exposed to its vapors, and over 2000 of these people died. Q.) Write a Lewis structure for methyl isocyanate and predict its bond angles. What is the hybridization of its carbonyl carbon? Of its nitrogen atom?
- Hydrogen cyanide can be catalytically reduced with hydro-gen to form methylamine. Use Lewis structures and bond ener-gies to determine ΔH°ᵣₓₙ for HCN(g)+2H₂(g)→CH₃NH₂(g)Find the propanol combustion enthalpy using bond energy 2C3H7OH(l)+9O2(g)-->6CO2(g)+8H2O(g)Covalent bonds: H―HC―HO―HO═O C≡O Bond energy (kJ/mol):4364154654981080Calculate the enthalpy change (H, in kJ/mol) for the following reaction and indicate whether the reaction is exothermic or endothermic.(*BE for C═Oin CO2)(a) CH4(g)+ H2O(g)CO(g)+ 3H2(g);
- HH NaH (base) D-CH3 2. Consider the following reaction: Draw 4 valid resonance structures/forms from this reaction:16. Which of the following structures is the CORRECT resonance structure of the following. molecule: (A) (B) (C) (D) CH3- CH₂ CH3 -H CH₂CH3 CH₂CH-CH₂ CH3 CH3Acetone [(CH3)2CO] is widely used as an industrial solvent.(a) Draw the Lewis structure for the acetone molecule andpredict the geometry around each carbon atom. (b) Is theacetone molecule polar or nonpolar? (c) What kinds ofintermolecular attractive forces exist between acetone molecules?(d) 1-Propanol (CH3CH2CH2OH) has a molecularweight that is very similar to that of acetone, yet acetoneboils at 56.5 °C and 1-propanol boils at 97.2 °C. Explain thedifference.