1 8 Pts Classify The Following Covalent Bonds As Polar Or Nonpolar Electronegativities A N F H 2 1 B 2 0 B C H 1 (51.68 KiB) Viewed 34 times
1 8 Pts Classify The Following Covalent Bonds As Polar Or Nonpolar Electronegativities A N F H 2 1 B 2 0 B C H 2 (51.68 KiB) Viewed 34 times
1 8 Pts Classify The Following Covalent Bonds As Polar Or Nonpolar Electronegativities A N F H 2 1 B 2 0 B C H 3 (34.67 KiB) Viewed 34 times
1. (8 pts) Classify the following covalent bonds as polar or nonpolar: Electronegativities: a) N-F H: 2.1 B: 2.0 b) C-H C: 2.5 N: 3.0 c) B-CI 0: 3.5 P: 2.1 d) P-H Cl: 3.0 F: 4.0 2. (3 pts) The attraction between a negatively charged ion and a positively charged ion is called an) bond. 3. (4 pts) Use the VSEPR theory to predict the shape of each of the following molecules (as determined by the positions of the atomic nuclei): [Shapes: linear; triangular; bent or V-shaped; tetrahedral; tripod or trigonal pyramidal] H-S-H :CiCEN: b) Shape: Shape: 4. (6 pts) Give the names of the following covalent compounds: a) SiC14 b) N203 c) CS2 5. (3 pts) The measure of the attraction of an atom of a given element, in a molecule, for the electrons in a covalent bond to that atom is called the of that element 6. (3 pts) The bond formed by the sharing of a pair of electrons between two atoms is called a(n) bond.
13. (3 pts) How many grams of potassium hydroxide, KOH (molar mass = 56.11 g/mol) would need to be dissolved in 1.000 Liter of a water solution to give a concentration of KOH = 0.85 Molar (moles/Liter)? Answer: c) 14. (4 pts) Indicate which four of the following ARE general properties of aqueous ACIDIC solutions: a) Tastes salty. b) Tastes bitter. Tastes sour. d) Feels slippery or soapy on the skin. e) Reacts with active metals (iron, tin, zinc, etc.) to dissolve the metal and give off hydrogen gas. f) Reacts with bases to form ionic compounds called salts (and sometimes also water). Reacts with acids to form ionic compounds called salts (and sometimes also water). h) Turns litmus indicator dye from red to blue. i) Turns litmus indicator dye from blue to red. g)
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