5. Buffer and pH problems. Show your work below the problems (and on the other side of this needed), but please write your final answer in the blank next to the question. page, if A. What is the pH if 40.00 mL 0.0045M HCI is added to 140.0 mL dH20? B. What is the pH if 15.0 mL of 0.064M NaOH is added to 70.0 mL dH20? C. What is the pH if 30.0 mL of 0.20M NaH2PO4 was mixed with 35.0 mL of 0.30M NazHPO4? The pKa values of phosphate are 2.14, 7.20 and 12.40.
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.
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