Interpretation:
Among amorphous, ionic, molecular, covalent, network or metallic solids, the type of silicon carbide solid should be determined.
Concept introduction:
The main classes of crystalline solids can be characterized as follows:
(1) Ionic solids: These types of solids can be formed by particles known as ions that kept together through strong ionic forces. An example of ionic solid is
(2) Molecular solids: These solids are formed by particles called molecules. These molecules are kept together through weak hydrogen bonding and also Van der Waals forces. The example of this type of solid is sucrose.
(3) Covalent network solids: In these solids, atoms are kept together through covalent bonding and quartz.is an example of covalent network solid.
(4) Metallic solids: These types of solid are arrangement of large number of atoms and they also show metallic properties such as electrical conductivity. The example of this solid is iron and silver.
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Chapter 12 Solutions
LCPO CHEMISTRY W/MODIFIED MASTERING
- Use the literature Ka value of the acetic acid, and the data below to answer these questions. Note: You will not use the experimental titration graphs to answer the questions that follow. Group #1: Buffer pH = 4.35 Group #2: Buffer pH = 4.70 Group #3: Buffer pH = 5.00 Group #4: Buffer pH = 5.30 Use the Henderson-Hasselbalch equation, the buffer pH provided and the literature pKa value of acetic acid to perform the following: a) calculate the ratios of [acetate]/[acetic acid] for each of the 4 groups buffer solutions above. b) using the calculated ratios, which group solution will provide the best optimal buffer (Hint: what [acetate]/[acetic acid] ratio value is expected for an optimal buffer?) c) explain your choicearrow_forwardHow would you prepare 1 liter of a 50 mM Phosphate buffer at pH 7.5 beginning with K3PO4 and 1 M HCl or 1 M NaOH? Please help and show calculations. Thank youarrow_forwardDraw the four most importantcontributing structures of the cation intermediate thatforms in the electrophilic chlorination of phenol,(C6H5OH) to form p-chlorophenol. Put a circle aroundthe best one. Can you please each step and also how you would approach a similar problem. Thank you!arrow_forward
- A 100mM lactic acid/lactate buffer was found to have a lactate to lactic acid ratio of 2 and a pH of 4.2. What is the pKa of lactic acid? Can you please help show the calculations?arrow_forwardUsing line angle formulas, draw thestructures of and name four alkanes that have total of 7carbons, one of which is tertiary.Please explain this in detail and can you also explain how to approach a similar problem like this as well?arrow_forwardUsing dashed line wedge projections drawthe indicated compounds and indicate whether thecompound you have drawn is R or S.(a) The two enantiomers of 2-chlorobutane. Can you please explain your steps and how you would approach a similar problem. Thank you!arrow_forward
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