chem 1011

University Of New England (UNE )

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CHEM 1011 Medical Gen. Chemistry Midterm Prep Questions with complete solutions
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10

juli 2023

2022/2023

A+
Which of the following affects the activation energy of a reaction? correct answer: presence of a catalyst A reaction has an activation energy of 195.0 kJ/mol. When the temperature is increased from 200.°C to 220.°C, the rate constant will increase by a factor of correct answer: 7.5 Reaction intermediates differ from activated complexes in that correct answer: they are molecules with normal bonds rather than partial bonds and can occasionally be isolated A transition state is a spe...
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chem 1011 final Questions With Complete Solutions
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10

juli 2023

2022/2023

A+
An _____ property depends upon the size of the sample correct answer: extensive Density is expressed in correct answer: grams/mL In the density lab experiment, we learned how to correct answer: find the volume of an unknown sample Density can be found by correct answer: a direct measurment (g/mL) In the density lab experiment, which balance did we use? correct answer: analytical, semi-analytical, triple beam Which of the follow properties will not be studied in this experimen...
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UNE Chem 1011 week 5-7 review Questions With Complete Solutions
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5

juli 2023

2022/2023

A+
For the reaction F2(g) ⇌ 2 F(g), the equilibrium constant at 223 °C is 7.3 x 10-13. If a sample of F2 is heated to 223 °C and allowed to reach equilibrium correct answer: nearly all of F2 will remain unreacted, with a very small amount of F present At equilibrium correct answer: the rate of the forward reaction is equal to the rate of the reverse reaction and the concentration of the reactants and products can be very different For the reaction 2 BrCl(g) ⇌ Br2(g) + Cl2(g), the equi...
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CHEM 1011 Lab Final Questions With Complete Solutions
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4

juli 2023

2022/2023

A+
Which reacts more rapidly, ionic/covalent solutes? correct answer: ionic An increase of concentration of either or both reactants increases the rate of reaction due to what? (molec. collisions) correct answer: an increase in # of molecular collisions The surface area of a solid reactant may be increased by what? correct answer: grinding it up with a mortar and pestle Rate of reaction doubles as the temp. of a reaction system goes up by how many degrees? correct answer: 10 degrees C ...
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UNE week 1/2 chem review, UNE week chem 1011 3-4 review, UNE Chem 1011 week 5-7 review Questions with complete solutions
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11

juli 2023

2022/2023

A+
A hydrogen bond is characterized by correct answer: the highly concentrated partial charge between an H atom and F, O, or N atoms Which of the following exhibits hydrogen bonding?CH3OH,HCl,CH2O, HCN correct answer: CH3OH An adhesive force correct answer: is the result of the intermolecular forces that attract different molecules together An Intermolecular Force correct answer: is the result of the intermolecular forces that attract identical molecules Liquids with high surface te...
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Chem 1011- Lab Final Questions With Complete Solutions
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9

juli 2023

2022/2023

A+
(Lab Techniques lab) The metric prefix "kilo-" has a decimal equivalent of correct answer: 1000 (Lab Techniques lab) A measure of how close the value of a measurement agrees with a known or accepted value correct answer: accuracy (Lab Techniques lab) The determination of the reproducibility of a measurement correct answer: precision (Lab Techniques lab) To measure the length of an object, the equipment used would be a correct answer: meterstick (Lab Techniques lab) Using signif...
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CHEM 1011 Final Exam| 151 Questions| With Complete Solutions
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18

juli 2023

2022/2023

A+
A solid _____________ compound, such as PbCl2 in water, that is classified as insoluble will dissociate ____________. correct answer: ionic, slightly A __________________________ process will only occur under a specific set of conditions when ______________ is continually added. correct answer: non-spontaneous, energy What is defined as a specific configuration of locations and energies for all particles in a system? (one word) correct answer: Microstate If a process is thermodynamic...
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une chem 1011 final week 12 Questions With Complete Solutions
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2

juli 2023

2022/2023

A+
A cathode correct answer: is an electrode where reduction occurs In an electrochemical cell based on the following reaction Zn(s) + Cu2+(aq) ⟶ Zn2+(aq) + Cu(s) Which species acts as the anode? correct answer: Zn(s) In the reaction Mg(s) + 2 Ag+(aq) ⟶ Mg2+(aq) + 2 Ag(s) What is the reduction half-reaction? correct answer: 2 Ag+(aq) + 2e- ⟶ 2 Ag(s) When paired with the anode half-reaction Co(s) ⟶ Co2+(aq) + 2 e-; E° = -0.28 V Which of the following cathode half-reactions...
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une chem 1011 final week 11 & 12 questions with complete solutions
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10

juli 2023

2022/2023

A+
Which of the following is always true? -Spontaneous changes cause an increase in the entropy of the universe -Heat will flow from a cooler object to a hotter object -Processes that involve an increase in entropy of the system are spontaneous -The change in entropy of the universe is the same as the change in entropy of the surroundings correct answer: Spontaneous changes cause an increase in the entropy of the universe A pure, perfectly crystalline solid at 0 K correct answer: has zero ...
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