Practice Exam V with answers

Practice Exam V with answers - General Chemistry II Exam V,...

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Unformatted text preview: General Chemistry II Exam V, 100 Points McCallum You have 80 minutes to complete this exam. You may use a calculator, 3 5 card, and the provided periodic table and equation sheet. Please box or otherwise indicate answers clearly. Ambiguous or unreadable work will not be graded. Read the questions carefully!! Passing score on this exam is 65%! To be used only if you request a re-grade or grading correction: I wish to turn in this exam in for a possible re-grade. I have attached a note to indicate where I think the mistake was. I have not altered or added to my original answer in any way. I understand that altering an exam for a re-grade is considered cheating and will result in being reported to the Dean of Student Life for disciplinary action in addition to a grade of F for the course. (signed) Date Name: Student I.D.: Name: Student No.: 2 Multiple Choice questions. 50 Points Choose the best answer from the list of choices. Use your scantron sheet and mark each answer clearly. Be sure to fully erase all changes. 1. Which of the following transition elements will not react with aqueous hydrochloric acid to liber- ate hydrogen gas? (a) zinc (b) titanium (c) scandium (d) iron (e) copper 2. Choose the incorrect statement about the transition elements. (a) Elements on the right side of the transition series usually do not exhibit the wide range of oxidation states. (b) Stability of higher oxidation states increases down a group. (c) Electrode potentials decrease across to the right. (d) All but Cu have positive electrode potentials. (e) All but Cu displace H + ( aq ) as H 2 ( g ) . 3. Which of the following has the highest possible oxidation state? (a) V (b) Ti (c) Mn (d) Y (e) Sc 4. Choose the incorrect statement. (a) Iron is the most widely used metal from the earths crust. (b) The simplified equation for the reduction of iron is Fe 2 O 3 ( s ) + 3CO ( g )- 2Fe ( l ) + 3CO 2 ( g ) (c) One component of making steel from pig iron is to reduce the carbon content. (d) The product of a blast furnace is steel. (e) The solid reactants in a blast furnace are iron ore, coke, and a slag-forming flux. 5. Write the electron configuration for Co 3 + . (a) [ Ar ] 3d 6 (b) [ Ar ] 4s 2 d 4 (c) [ Ar ] 4s 2 4p 4 (d) [ Ar ] 4s 1 4p 1 (e) [ Ar ] 5s 2 Name: Student No.: 3 6. Choose the incorrect statement. (a) Zn, Cd, and Hg all have electron configurations of ( n- 1 ) d 10 ns 2 . (b) Metallic bonding is strong in Zn, Cd, and Hg because only s electrons are involved. (c) The low melting and boiling points of Zn, Cd, and Hg are due to the metallic bonding. (d) Galvanized iron is iron coated with zinc. (e) Mercury and cadmium are poisonous. 7. In the compound K 4 [ Fe ( CN ) 6 ] , the oxidation state of iron and its coordination number, respec- tively, are (a)- 4 and ten (b) 0 and ten (c) + 4 and four (d) + 2 and six (e)- 4 and six 8. A compound has the empirical formula CoCl 3 5NH 3 . One mole of the compound yields two moles of silver chloride when treated with silver nitrate. Ammonia is not removed by treatmentmoles of silver chloride when treated with silver nitrate....
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This note was uploaded on 04/07/2008 for the course CHEM 027 taught by Professor Mccallum during the Spring '08 term at Pacific.

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Practice Exam V with answers - General Chemistry II Exam V,...

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