Chemistry 112 ACS Exam Questions and Answers | 100% Pass

Chemistry 112 ACS Exam Questions and Answers | 100% Pass Energy (decreases/increases) with increasing wavelength? - ️️ Correct-decreases Energy (decreases/increases) with increasing frequency? - ️️ Correct-increases The energy gaps between levels (decrease/increase) as the energy levels increase (n=1 to n=2 to n=3, etc.) - ️️ Correct-decreases The O-Si-O bond angles in SiO₂ (quartz) are closest to... - ️️ Correct-110° A molecule with 0 lone pairs and 2 bonding electron pairs would be? - ️️ Correct-linear A molecule with 1 lone pair and 2 bonding electron pairs would be? - ️️ Correct-bent A molecule with 3 bonding electron pairs and 1 lone pair would have what VSEPR shape? - ️️ Correct-Trigonal pyramidal A molecule with 4 bonding electron pairs and 1 lone pair of electrons would have what VSEPR shape? - ️️ Correct-Seesaw A molecule of 6 bonding electron pairs would have what shape? - ️️ Correct- Octahedral Difference between molecular shape and geometry? - ️️ Correct-Shape refers to the orientation of atoms while geometry accounts for both atoms and electron orientations. TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 2/6 A molecule of 3 bonding electron pairs and 2 lone pairs of electrons would have what shape? - ️️ Correct-T shaped A molecule with 5 bonding electron pairs and 1 lone pair would have what shape? - ️️ Correct-Square pyramidal A molecule with 4 bonding electron pairs and 2 lone pairs would have what shape? - ️️ Correct-Square planar A molecule with 5 bonding electron pairs would have what shape? - ️️ Correct-Trigonal bipyramidal A molecule with 4 bonding electron pairs would have what shape? - ️️ Correct- Tetrahedral A molecule with 3 bonding electron pairs would have what shape? - ️️ Correct-Trigonal planar Triple bonds have ___ sigma bonds and ___ pi bonds. - ️️ Correct-1 sigma, 2 pi Double bonds have ___ sigma bonds and ___ pi bonds. - ️️ Correct-1 sigma, 1 pi Single bonds have ___ sigma bonds and ___ pi bonds. - ️️ Correct-1 sigma, 0 pi Resonance structures describe molecules that ___ - ️️ Correct-have multiple electron dot formulas Name 3 instances when the octet rule can be broken - ️️ Correct-¹Excess of electrons in Lewis Dot diagram, ²Special indstance e.g. Sulfur, ³Rare Gas TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 3/6 Four equivalent, single, covalent bonds by carbon in its compounds that resemble methane, CH₄ is a result of _____ - ️️ Correct-Hybridization For simple cubic, 2r= - ️️ Correct-s For body centered cubic, 4r= - ️️ Correct-√3 · s For face centered cubic, 4r= - ️️ Correct-√2 · s What factor affects the vapor pressure of a liquid? - ️️ Correct-Temperature A gas or vapor may be liquified only at temperatures ____ - ️️ Correct-at or below the critical temperature # of atoms per unit for Face centered cubic - ️️ Correct-5 # of atoms per unit for Body centered cubic - ️️ Correct-2 # of atoms per unit for simple cubic - ️️ Correct-1 # closest atoms in Body Centered Cubic - ️️ Correct-8 # closest atoms in Face Centered Cubic - ️️ Correct-12 # closest atoms in Simple cubic - ️️ Correct-6 What type of bond exists between the two N atoms in N₂O₄? - ️️ Correct-single (NOT DOUBLE OR TRIPLE) Liquid evaporating in an (endothermic/exothermic) process - ️️ Correct-endothermic - requires the absorption of energy Arhennius equation - ️️ Correct-k=Ae^(-Ea/RT) TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 4/6 The (slowest/fastest) reaction determines the rate law? - ️️ Correct-slowest Integrated Rate expression for 1st order - ️️ Correct-ln(k₀/k)=kt Integrated Rate expression - ️️ Correct-1/[A] - 1/[A₀] = kt What will be the effect of increasing the temperature of reactants that are known to undergo endothermic reaction? - ️️ Correct-Both the rate of reaction and the value of the equilibrium constant will increase. What will be the effect of increasing temperature from 10 to 20 degrees celsius on the reacting molecules if the rate of the reaction is doubled? - ️️ Correct-The number of molecules above the reaction energy threshold will double. The value for the rate constant of a reaction can generall