《2022年人教版选修四第四章《电化学基础》测试题 .pdf》由会员分享，可在线阅读，更多相关《2022年人教版选修四第四章《电化学基础》测试题 .pdf（12页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、人教版选修四第四章电化学基础测试题（People teach edition elective four, fourth chapter electrochemistry foundation test question）People teach edition elective four, fourth chapter electrochemistry foundation test question Guangzhou No. 2010.3 Chemistry Center offers This test paper is divided into the first part (the
2、 multiple-choice question) and the second part (the non selective question), the full score 100 points, the examination time 40 minutes. The first part is the multiple-choice question (50 points altogether) A single choice (5 minutes every day, every day with only one option, a total of 30 points.)
3、1. waste battery pollution caused widespread attention, the waste battery in the environment pollution is the main material A. zinc, B., mercury, C. graphite, D. manganese dioxide 2. insert the pure zinc sheet and the pure copper sheet into the dilute sulfuric acid for the same time according to the
4、 diagram. The following statement is correct A. two beaker has no bubbles on the surface of the copper sheet 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 12 页B. a copper plate is an anode, and a copper plate in the second is a negative electrode In C. two beaker, the pH of the solution incre
5、ases The rate at which D. produces bubbles is slower than that of B. 3. the reaction of galvanic cells in the following changes is A. darkened the surface of silver medals in the air B. when galvanized iron is scratched on the surface, it can also prevent iron from being oxidized C. hot wire in cont
6、act with cold water, black protective layer formed on the surface D. concentrated nitric acid is more likely to oxidize metal copper than dilute nitric acid 4. the three electrolytic cells which are respectively molten sodium chloride, magnesium chloride and alumina are connected in series, and afte
7、r a certain period of time, the ratio of the amount of sodium, magnesium and aluminum is released under certain conditions A.1: 2, 3, B.3: 2, 1, C.6, 2, 3, 1, D.6: 3 5., about lead-acid batteries Pb + PbO2 + 2H2SO4, PbSO4 + 2H2O is correct, yes 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 12
8、 页In A. discharge, the positive reaction is Pb (s) +SO42- (AQ) = PbSO4 (s) +2e- B. in the discharge when the battery is in lead anode materials When C. charges, the concentration of sulfuric acid in the battery is getting smaller When charging D., the anodic reaction is PbSO4 (s) +2e-=, Pb (s) + SO4
9、2- (AQ) The 6. one consists of X, Y, Z alloy, W four metal components, if only the Z alloy in hydrochloric acid, Y can be dissolved; if the alloy in the humid air, the surface appears only Z compounds; if the alloy as anode, X salt solution as the electrolyte, electricity four the metal ions form in
10、 the solution, but only precipitated on the cathode X. The order of activity of the four metals is. A.Y Z W X Y W X B.Z C.W Z Y X Y Z W D.X Two, double choice (5 minutes every day, every day there are two options to do wrong, 0 points, missed 2 points, a total of 20 points.) In an electrolyte soluti
11、on of 7.pH = a, two inert electrodes are inserted into the electrolyte for a period of time after direct current, and the solution is pH A, then the electrolyte 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页，共 12 页may be A.NaOH B.Na2SO4 C.AgNO3 D.HCl 8. the following description does not conform
12、 to the actual production A. electrolytic molten alumina is used to make aluminum, and iron is used as anode Refining crude copper by B. electrolysis and using coarse copper as cathode C. caustic soda was prepared by electrolysis of saturated salt water, and nickel coated carbon steel mesh was used
13、as cathode D. galvanized on plated parts, with zinc as anode 9., the chemical term is an important tool in studying chemistry A. electrolysis saturated salt water, anode electrode reaction: 2Cl - 2E = Cl2 = The negative reaction of B. type alkaline hydrogen fuel cell: O2 + 2H2O + 4e- = 4OH When C. p
14、lated copper, anode reaction: Cu2+, 2e-, =Cu The negative reaction of D. steel electrochemical corrosion: Fe2e= Fe2+ 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页，共 12 页10. when the electrolyte solution is an oxyhydrogen fuel cell, the electrolyte solution is saturated with sodium carbonate sol
15、ution for a period of time, assuming that the temperature is constant at the time of electrolysis and the inert electrode is used A. when the negative electrode of the battery consumes mg gas, the anode of the electrolytic cell is simultaneously generated with Mg gas The positive reaction of B. batt
16、ery is O2 + 2H2O + 4e- = 4OH- After C. electrolysis, C (Na2CO3) remains unchanged, and crystal precipitation occurs in the solution In D. batteries, C (KOH) remains constant; solution pH becomes larger in the electrolytic cell The second part is the non choice question (50 points altogether) Three,
17、non choice questions (50 points) 1. (16 point) Zn-MnO2 dry cells are widely used, and their electrolyte solutions are ZnCl2-NH4Cl mixed solutions. (1) the negative electrode material of the battery is. When the battery is working, the electrons flow (fill the positive or negative). (2) if the ZnCl2-
18、NH4Cl mixed solution containing Cu2 + 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 5 页，共 12 页impurities, will accelerate corrosion of a electrode, the main reason is that . In order to remove Cu2+, it is better to use the following reagent (fill in code). A.NaOH, b.Zn, c.Fe, d.NH3, H2O (3) one of
19、the methods of MnO2 production is to use graphite as electrode and electrolytic acidification of MnSO4 solution. The electrode reaction of cathode is. If the electrolytic circuit passes through the 2mol electron, the theoretical yield of MnO2 is gram. 12. (10 points) dip the clean metal sheets Fe, Z
20、n, A, B, respectively, with Cu wires in suitable electrolyte solutions. The movement direction of the voltage indicator and the reading of the voltmeter are recorded and shown as shown in the following table: Metal Electron flow direction Voltage /V Fe Fe to Cu +0.78 精选学习资料 - - - - - - - - - 名师归纳总结
21、- - - - - - -第 6 页，共 12 页Zn Zn to Cu +1.10 A Cu to A 0.15 B B to Cu +0.3 According to the above experimental records, complete the following blank: (1) the greater the difference in the metal activity of the two electrode that makes up the chemical cell, the greater the reading of the voltmeter (fil
22、ling in big or small). Zn, A, B, three kinds of metal activity from strong to weak order is. (2) the primary cell composed of Cu and A is negative electrode 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 7 页，共 12 页. (3) A and B alloy, exposed in moist air, first corroded. 13. (24 points) for the dru
23、g and time, a, B and C three students with copper, zinc tablets, dilute sulfuric acid and CuSO4 solution; DC power supply, graphite electrodes, wires, tubes and other chemical beakers, common drugs and instruments (supplies), with a clever idea, relay way a series of experimental design, comparison
24、of copper and zinc metal activity relative strength. Fill in the blanks below: (1) a student placed a small piece of copper and zinc on the bottom of the beaker (copper and zinc were not in contact), and carefully added dilute sulfuric acid to the beaker. A classmates design idea is. (2) the experim
25、ent of classmate B, followed by the addition of a solution to the beaker,. The principle that B students make the relative strength of zinc and copper metal activity is based on ,. (3) C students used DC power and graphite electrodes to assemble the electrolytic device, and the necessary reagents (a
26、s electrolyte) were added to the solution after the experiment. The reaction started under regulation, and the chemical reaction equation in the experiment was. The obvious experimental phenomena obtained are. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 8 页，共 12 页(4) please design another simple
27、experiment (reagent, instrument optional) to investigate and confirm the relative strength of zinc and copper metal activity (brief description of operation and phenomenon) . Take the 4 and fourth chapters on the basic unit of electrochemistry The first part is the multiple-choice question (90 point
28、s altogether) Question no. One Two Three Four Five Six Seven Eight 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 9 页，共 12 页Nine Ten Answer B C B D B B AD AB AD BC The second part is the non choice question (60 points altogether) 11. (1) Zn (or zinc) anode (4 points) 精选学习资料 - - - - - - - - - 名师归纳总结
29、- - - - - - -第 10 页，共 12 页(2) Zn reacts with Cu2+ to form Cu, Zn and Cu to form the primary cell, and the reaction rate (4 points) is accelerated (b) (2) (2H+2e-=H2 = 3) (2) 87g (4) 12. (10 points) (1) large (2 points) (2) Zn, B A (2 points) (3) Cu (2) Cu2+ (2) Cu2e=; (4) B (2 points) 13. (24 points
30、) (1) there is a bubble on the zinc sheet, and there is no bubble on the copper sheet. (2 points) Zinc displaces hydrogen from acid, but copper does not. (2 points) (2) CuSO4 solution. (2 points) There is red copper precipitation on the zinc film, and the rate of bubble formation on the zinc film is
31、 obviously accelerated (2). (2 points) A reactive metal can displace an inert metal from its salt solution, (2 points) Zn, Cu, dilute sulfuric acid, a galvanic 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 11 页，共 12 页cell, and Zn as a negative electrode. (3 points) (3) 2CuSO4 + 2H2O + O2 = 2Cu + 2H
32、2SO4 (3 points) Red copper precipitates on the cathode. (2 points) (4) take a small piece of copper and zinc slices in the test tube, and then add a small amount of blue copper sulfate solution to the test tube. After a while, the blue of the test tube solution added with zinc drops to almost colorless solution. (other reasonable answers are equally divided) (4 points) 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 12 页，共 12 页