Chem 210

CHEM 210 Exam Questions with Correct Answers what will decrease the solubility of gaseous solutes - Answer-increasing temperature and decreasing the pressure colligative properties depend on... - Answer-the number of particles dissolved delta S univ < 0 at 25*C... is it spontaneous or nonspontaneous - Answer-it is nonspontaneous at room temp. stronger intermolecular forces effect boiling point by... - Answer-increasing the boiling point hydrogen bonding - Answer-gives rise to hydra...

CHEM 210 Final Test Questions with Correct Answers Calculate volume 0.2 NaOH and # equivalence points for titration of 25mL 0.1 H3PO4 - Answer-2 eq points0.1M x 0.025L = 0.0025 mol H3PO4 mol H3PO4 = mol added NaOH 0.0025 mol NaOH / 0.2 M = 0.0125 L NaOH added Calculate equivalence point volumes for titration of 25.00 mL of 0.060 M HCl and 0.10 M H3PO4 with 0.075 M NaOH - Answer-exp 1 calculations find moles total acid, response factor - Answer-Coefficient that makes the relative respo...

CHEM 210 Final Exam Questions and Answers if the p-value is greater than 0.1, we generally conclude the data are consistent with the null hypothesis - Answer-true what is the best way to characterize the random error present in a measurement? - Answer-take replicate measurements of your analytes and using the standard deviation and a t-table specify an error bar with a confidence limit statistical interference assesses whether an observed phenomenon in the data can reasonably be attrib...

CHEM 210 Practice Questions with Correct Answers What is a systematic error and how can you detect it? - Answer-A flaw in equipment of experiment design Can detect by analyzing a known sample (certified reference material) or a blank sample. What is a random error? - Answer-An error from uncontrolled variables in an experiment. Always present and cannot be eliminated. What is a gross (blunder) error? - Answer-An error that arises from human mistakes in experimental procedure. i.e ca...

CHEM 210 Exam 2 Questions with Correct Answers A reaction in which electrons are transferred from one reactant to another - Answeroxidation-reduction Loss of electrons - Answer-Oxidation Gain of electrons - Answer-Reduction Oxidation takes place at the surface of an electrically conductive material called - Answer-anode The reduction takes place at another electrically conductive surface called the - Answercathode __________ cells use a spontaneous oxidation-reduction reaction to produ...

CHEM 210 Midterm 2 Exam Questions and Answers All Correct Identify the equivalence point on the titration curve. Define the end point of a titration. - Answer-The equivalence point of a titration is reached when the moles of titrant added are stoichiometrically equal to the moles of analyte present in solution. This is observed on the titration curve as the point in the center of the steepest part of the curve, which correlates to the greatest concentration (pH) change per volume of add...

CHEM 210 Final Exam Questions with Answers All Correct Which molecule is an ester - Answer All of the carbon backbones from amino acids end up as intermediates in the ________. - Answer-citric acid cycle When 2-butene reacts completely with bromine, the product is - Answer-2,3- dibromobutane. Amino acids that can be synthesized in the body are called ______ amino acids. - Answer-nonessential Which conversion is accomplished during glycolysis? - Answer-glucose to pyruvate Every turn of...

CHEM 210 Reactions Test Questions and Answers All Correct Describe the mechanism for the electrophilic addition of a strong acid. - Answer-Step 1) An alkene grabs a hydrogen off of a strong acid, forming a carbocation intermediate. Step 2) The conjugate base of the acid (an anion now) bonds to the open shell carbocation What is the regioselectivity of electrophilic addition reactions? - Answer-Markovnikov What is Markovnikov regioselectivity? - Answer-States that the major product is d...

CHEM 210 Exam Questions and Correct Answers What is a cathode? - Answer-a negative electrode at which reduction occurs What is an anode? - Answer-the positive electrode at which oxidation occurs Good way to remember which is which for anode and cathode - Answer-An Ox and a Red Cat What is the two electrode setup? - Answer-anode and cathode What is a galvanic cell? - Answer-A cell in which spontaneous oxidation-reduction reactions produce electrical energy (anode and cathode Zn and Cu) ...