ACS Chemistry general Exam Questions & Answers

ACS Chemistry general Exam Questions & Answers 1 atm = ? kPA? - CORRECT ANSWER- 101.325 1 L - CORRECT ANSWER- = 1 dm^3 1000 mL 2 electron domains results in what type of hybridization? - CORRECT ANSWER- sp 6 electron domains results in what type of hybridization? - CORRECT ANSWER- Sp3d2 a double bond is made up of - CORRECT ANSWER- 1 sigma 1 pie a molecule in which a concentration of positive electric charge is separated from a concentration of negative charge. - CORRECT ANSWER- dipole A solution will conduct electricity if it contains what? - CORRECT ANSWER- dissolved ions a substance that produces ions when dissolved in solution. - CORRECT ANSWER- an electrolyte a triple bond is made up of - CORRECT ANSWER- 2 pi bonds 1 sigma bond Acids increase the concentration of what? Bases increase the concentration of what? - CORRECT ANSWER- H+ OHan analytical technique to determine the concentration of a solute. - CORRECT ANSWERTitration An atom has a valence shell configuration of 1s1. To which group of elements on the periodic table does it belong? - CORRECT ANSWER- IA alkali metals an electronegativity difference ≥ 1.7 indicates an ________ (sometimes you see 2.0 instead of 1.7). An electronegativity difference ≤ 0.5 is generally considered ___________. If it is somewhere in the middle it is considered ________ - CORRECT ANSWER- ionic nonpolar polar An experimental phenomena associated with atoms having unpaired electrons - which states such substances are attracted to magnetic fields - CORRECT ANSWER- Paramagnetism An ionic bond is stronger (i.e. the lattice energy is more negative) if: - CORRECT ANSWER1) The charge on the individual ions is greater 2) The distance between + and - charge is less (smaller ions) Assigning Oxidation Number Rule Exceptions - CORRECT ANSWER- Oxygen = -2 except in Peroxide = -1 Hydrogen = +1 when with nonmetal -1 when with metal Halogens are -1 except when with Oxygen while Fluorine is ALWAYS -2