Electronic Effects
The effect of electrons that are located in the chemical bonds within the atoms of the molecule is termed an electronic effect. The electronic effect is also explained as the effect through which the reactivity of the compound in one portion is controlled by the electron repulsion or attraction producing in another portion of the molecule.
Drawing Resonance Forms
In organic chemistry, resonance may be a mental exercise that illustrates the delocalization of electrons inside molecules within the valence bond theory of octet bonding. It entails creating several Lewis structures that, when combined, reflect the molecule's entire electronic structure. One Lewis diagram cannot explain the bonding (lone pair, double bond, octet) elaborately. A hybrid describes a combination of possible resonance structures that represents the entire delocalization of electrons within the molecule.
Using Molecular Structure To Predict Equilibrium
Equilibrium does not always imply an equal presence of reactants and products. This signifies that the reaction reaches a point when reactant and product quantities remain constant as the rate of forward and backward reaction is the same. Molecular structures of various compounds can help in predicting equilibrium.
Indicate the conjugate acid of CH3NHCH3.
a. CH3NNCH3
b. CH3N-CH3
c. CH3N+H2CH3
d. CH3N+HCH3
Which of the following is true about the molecule/s and acid strength ?
a. HCl is a weaker than HI acid because Cl- ion is more stable than I- ion.
b. H2SO4 is a strong acid because it has 2 Hydrogens
c. HOCl is weaker than HOBr because Cl is more electronegative than Br
d. CH3CH2OH is a weaker acid than CH3COOH because the negative charge is more dispersed in the conjugate base of CH3COOH.
Given : ?? = [?3?+][??−] = 1.0 × 10−14 at 25C . pKw= 14 Which of the following is true ?
a. At 25 C, [?3?+] & [??−] would be large in a water solution.
b. At 25 C, the pH of water is =14
c. The pH of an aqueous solution can be determined if [OH-] is provided.
d. At 25 C, majority of H2O will be dissociated.
pH of 0.125 M NaOH is
a. 0.903
b. 13.3
c. 13.9
d. 13.10
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