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CHEM112FinalExamStudyGuideQuestionsand Answers. For a reaction, what generally happens if the temperature is decreased? - > A decrease in k occurs, which results in a slower rate. Define Le Chatelier's Principle. - > When a chemical system at equilibrium is disturbed, the system shifts in a direction that minimizes the disturbance. Give the characteristic of a second-order reaction having only one reactant. - > The rate of the reaction is proportional to the square of the conc...

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5 páginas

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Pronurse

Chem 112 Exam Prep Questions with Correct Verified Answers

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22 páginas

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KenAli

Chem 112 Exam 1 Questions And Answers | Chem 112 Exam 1 Study Guide & Practice Test 2026/2027

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4 páginas

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BravelRadon

HCl(strong acid) - correct answers hydrochloric acid(strong acid) HNO3(strong acid) - correct answers nitric acid(strong acid) H2SO4(strong acid) - correct answers sulfuric acid(strong acid) HBr(strong acid) - correct answers hydrobromic acid(strong acid) HI(strong acid) - correct answers hydroiodic acid(strong acid) HCLO4(strong acid) - correct answers perchloric acid(strong acid) HCLO3(strong acid) - correct answers chloric acid(strong acid) Bronsted-Lowry acid - correct a...

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H2O has a stronger molecular bond due to the presence of hydrogen bonding with oxygen. - correct answers Which has the stronger intermolecular forces, N2 or H2)? Explain. - correct answers Which gas would behave more ideally at the same conditions of pressure and temperature? CO or N₂? Why? Wax and water can be both a solid and a liquid respectively because the density of the solid wax is higher than that of water. - correct answers Wax consists of long chain non-polar hydrocarbons that...

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decreases - correct answers Energy (decreases/increases) with increasing wavelength? increases - correct answers Energy (decreases/increases) with increasing frequency? decreases - correct answers The energy gaps between levels (decrease/increase) as the energy levels increase (n=1 to n=2 to n=3, etc.) 110° - correct answers The O-Si-O bond angles in SiO₂ (quartz) are closest to... linear - correct answers A molecule with 0 lone pairs and 2 bonding electron pairs would be? bent...

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6 páginas

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RealGrades

Define thermal energy. A) energy associated with the motion of an object B) energy associated with the temperature of an object C) energy associated with the force of an object D) energy associated with the gravity of an object E) energy associated with the position or composition of an object - correct answers B ) Identify an element that is NOT in its standard state. A) Hg(g) B) N2(g) C) O2(g) D) C(s) E) Ne(g) - correct answers A In which of the following substances should hydrogen bondi...

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7 páginas

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Definition of Polar Covalent Bond - correct answers difference in electronegativity Which of the Molecules are Polar ? CCl4, NH3, NO3-, H2, C3H8, H2O - correct answers NH3, H2O, ( C3H8=?) Which of the salts would have highest FA assuming distance are same ? ( NaI, CaSO4, AlPO4) - correct answers AlPO4 what is used to measure the Ion/Dipole "Glue " - correct answers Enthalpy of Hydration = amount of energy given off when the ion is surrounded by water molecules ( Strongest = MOST...

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4 páginas

Escrito en 2025/2026

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Which statement is true about kinetic molecular theory? - correct answers The collisions of particles with one another is completely elastic. conversion from atm to mmhg - correct answers 1 atm = 760 mmhg conversion from atm to torr - correct answers 1 atm = 760 torr convert 1.5 atm to mmhg - correct answers 1140 mmhg (1.5 times 760) conversion from atm to psi - correct answers 1 atm = 14.7 psi conversion from atm to Pa (and kPa) - correct answers 1 atm = 101,325 Pa and 101.325 kP...

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5 páginas

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Chemicals from the laboratory should never be taken _________ the laboratory. - correct answers outside Determine the correct sequence of steps used in carrying out a measurement using a pH probe. Rank them from first to last. - correct answers Remove probe from storage solution Rinse probe with distilled water and blot dry Place probe in solution to be measured Observe readout on meter of sample solution pH Rinse probe, blot dry, then place in storage solution If pH < 8.3, the phen...

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6 páginas

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Select the correct equilibrium constant expression for the reaction: N2(g) + 3H2(g) ⇄ 2 NH3(g) - correct answers [NH3 ] 2 K= ---------------- [N2 ][H2 ] 3 In the Kinetics of Smell experiment, one of the experiments involved varying the concentration of the acetic acid. Here's a set of student data from that lab: What is the impact of increasing the concentration of acetic acid on the rate as measured by the average time in seconds it took to smell the ester? (exam 3 material)...

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3 páginas

Escrito en 2025/2026

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RealGrades

Geometry of Alkanes - correct answers tetrahedral Geometry of Alkenes - correct answers trigonal planar Geometry of Alkynes - correct answers linear saturated carbon - correct answers all single bonds Linear - correct answers 180 trigonal planar - correct answers 120 tetrahedral, trigonal pyramidal, bent - correct answers 109.5 Alkane formula - correct answers CnH2n+2 Alkene formula - correct answers CnH2n Alkyne formula - correct answers CnH2n-2 conformational isom...

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2 páginas

Escrito en 2025/2026

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Which of the following conditions is/are met at the equivalence point of the titration of a monoprotic weak base with a strong acid? - correct answers - The moles of acid added from the buret equals the initial moles of weak base - The pH of the solution is less than 7.00 What color change is exhibited by phenolphthalein during a titration of aqueous acetic acid with aqueous sodium hydroxide? - correct answers - Colorless to pink A statement of the first law of Thermodynamics is that: - c...

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Chemical Kinetics - correct answers How long reactions take, appearance of products, disappearance of reactants, concentration change, determining the rate of reactions Rate equation - correct answers k[A]^x[B]^y Overall order equation - correct answers x + y Rate law - correct answers define the rate of reaction, will have concentration/time units Orders - correct answers the exponents that are unrelated to coefficients, determined experimentally Orders can be positive/negative/fra...

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What does a positive Ecell imply? - correct answers A spontaneous reaction If Ered is smaller or more negative, than the substance is more likely to be... - correct answers Oxidized Do voltage, potential, and EMF all mean the same thing? - correct answers Yes What is the difference between a voltaic cell and an electrolytic cell? - correct answers Voltaic cells are spontaneous; electrolytic cells require outside energy. What is the charge of the anode in a voltaic cell? - correct ans...

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RealGrades

Light is composed of particles. - correct answers false Light is composed of waves - correct answers false Light sometimes behaves as if composed of waves - correct answers true Light sometimes behaves as if composed of particles - correct answers true Light is a form of electromagnetic radiation - correct answers true Photons are packets of energy - correct answers true photons have no mass - correct answers true photons have no electrical charge - correct answers true p...

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7 páginas

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things tend to go _______________ in energy - correct answers downhill concentration - correct answers how much you can dissolve and how much you put in it formula for molarity (M) - correct answers moles of solute/liters of solution; unit is mol/L formula for mole fraction (X) - correct answers moles of solute/(moles of solute+moles of solvent); unit is moles? formula for molality (m) - correct answers moles of solute/kilograms of solvent; unit is mol/kg what is the molality of 7...

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9 páginas

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RealGrades

formula for rate - correct answers ∆concentration/∆time effect of concentration on rate of reaction - correct answers increased concentration means an increase in the probability of having more collisions, increasing the rate of reaction effect of temperature on rate of reaction - correct answers molecules must collide with enough kinetic energy to react, increasing the temperature increases the kinetic energy which makes collision more likely and increases the chance that a collision ...

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5 páginas

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The density of a solution that is 18.0% by mass lead nitrate [Pb(NO3)2] is 1.18 g/cm3. Calculate the molarity of the lead nitrate solution. - correct answers b. 0.64 M What is the definition for molality? - correct answers d. moles of solute/Kg of solvent How many moles of sucrose, C12H22O11, is present in 80.0 grams of an aqueous solution that is 3.50% sucrose by mass? MM(C12H22O11) = 342.30 g/mol - correct answers a. 8.18 x 10^-3 moles At 20 C the Henry's law constant for N2O is ...

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4 páginas

Escrito en 2025/2026

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RealGrades

For a reaction, what generally happens if the temperature is decreased? - correct answers A decrease in k occurs, which results in a slower rate. Define Le Chatelier's Principle. - correct answers When a chemical system at equilibrium is disturbed, the system shifts in a direction that minimizes the disturbance. Give the characteristic of a second-order reaction having only one reactant. - correct answers The rate of the reaction is proportional to the square of the concentration of the...

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5 páginas

Escrito en 2025/2026

Grado A+

RealGrades

Which of the following molecular compounds would be highly soluble in hexane, C6H14? - correct answers C6H6 Consider the three statements and pick the best answer. I. An increase in disorder favors dissolution. II. Most spontaneous processes are exothermic. III. At constant temperature, when more solid is added to a supersaturated solution, the added solid dissolves. - correct answers 1 and 2 are true, 3 is false For solubility the higher the temperature the: - correct answers less so...

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4 páginas

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miscible - correct answers liquids that dissolve freely in one another in any proportion, no solubility limit (ie, water, ethanol) two ways to change solubility limit - correct answers change temperature, change pressure temperature - correct answers solids: deltaH >0, endothermic, ^ temp= ^ solubility limit, favors (aq): heat+solute(s) <=>solute(aq) gases: deltaH <0, exothermic, ^ temp decreases solubility limit, favors (s): solute(g) <=> solute(aq)+heat pressure - c...

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8 páginas

Escrito en 2025/2026

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RealGrades