Sections 12.6 2) What is the pH of 0.0020 M HCI? How does the pH of 0.0020OM HF compare? PH = -"log [n"] PH = -log L.0020]- 2.7 They will be the same. Sections 12.7 3) Write the balanced molecular equation for neutralization reactions that take place when the following water solutions are mixed. a) HCI (aq) + Lici Cag) LIOH (aq) 2-H - 2 1- CI - 1 (- Li - 3. b) Cd(OH)2 (aq) HI (aq) Cd I ft + OH2H c) A 125.00mL sample of an HI solution is titrated to the equivalence point using 0.209 M Cd(OH)2. If the titration requires 79.55mL of Cd(OH)2, what is the concentration (molarity) of HI?
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.
![MILK IS ACIDIC.
Sections 12.6
2) What is the pH of 0.0020 M HCI? How does the pH of 0.0020M HF compare?
PH--1og
L.0020]
=2.7
They will be the same.
Sections 12.7
3) Write the balanced molecular equation for neutralization reactions that take place when the following water
solutions are mixed.
a)
HCl (aq)
LIOH (aq)
2-H - 2
|- CI - I
- Li - 1
1-0 -1
+ LicI Caq)
b) Cd(OH)2 (aq)
HI (aq)
Cd I fo # OH2H
c) A 125.00mL sample of an HI solution is titrated to the equivalence point using 0.209 M Cd(OH)2. If the
titration requires 79.55mL of Cd(OH)2, what is the concentration (molarity) of HI?
71.55ML >
Concentra tion Cd COH)2=.209M
Vof Cd (ot),= 79.55ML
HI = ZM
Moles of HI is titrated = ZM X.125.00ML
= ,0 7955 L
.07955 L.209M=.0166Mol
cd (OH)2 + HI ) Cd I
+ H30
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