PRELAB REPORT 4 International University

GROUP PROJECT PRESENTATION INSTRUCTIONS Please read the following instruction carefully. Requirements: • Your reports are submitted in PDF file via email (name the file with your group number group of the class) hard copy in Room 02602 (Before 4 pm Friday 07052021). The hard copy report can be in black white, pls do not use plastic cover. • Group of class: Monday –Group class 2, Tuesday – Group class 3, Wednesday – Group class 1. • The presentation MUST BE presented in 15 20 minutes. • Each group has to choose a company to study its exportimport process as described in the content sections as below: Title page: title of project, group member, ID Table of contents (1 page) It should include parts of each of the sections below. I. Introduction (13 page) Briefly introduction about the company (History and structure of the company) The roles of importexport in the company Objectives of the project II. ImportExport Process (46 pages) • Overview about the products that are imported or exported • The steps of importingexporting products (What they do, what kinds of documentations they have to prepare) • Advantages and Disadvantages of the importingexporting process (Problems) V. Solution and recommendations (25 pages) • Identify possible reasons of above problems • Propose some solutions for those problems VI. Appendix The documentations needed for importingexporting products. Reference list VII. Contribution form.

LAB REPORT EXPERIMENT 4: CHEMICAL EQUILIBRIUM Student’s Name: Lê Thế Kiên Student’s Number: IELSIU19180 Group: Instructor’s Comments: Summarize the procedure (step-by-step and diagrams are encouraged) for each experiment ACID/BASE EQUILIBRIA #1: 10 drops 0.5M K2Cr4  Observe the color #2: 10 drops 0.5M K2Cr4  drops Concentrated HCl Observe the color compare with #1 #3: 10 drops 0.5M K2Cr4  drops Concentrated HCl Observe the color compare with #1  10 drops 6M NaOH  Observe the color and compare with #2 EQUILIBRIA OF ACID/BASE INDICATORS First, add drops methyl violet  20mL distilled water Then, divide equally #1: Observe the color #2: Drop 6M HCl ( add wisely until no significant change and not add too much) and observe the color change  Drop 6M NaOH (add wisely until no significant change and not add too much) and observe the color change  Drop 6M HCl (add wisely until no significant change and not add too much) and observe the color change COMPLEX ION FORMATION First, we add 10mL 0.01M FeCl3 and 10mL 0.01 KSCN Then, add 50mL distilled water Next, we divide equally into tubes #1: Observe the color(control tube) #2: Add 2mL 0.01M FeCl3  Observe the color change #3: Add 2mL 0.01M KSCN  Observe the color change #4: Add 10 drops 6M NaOH  Observe the color change #5: Cool down with ice bath Compare the color with test tube #1  Observe the color change #6: Warm with hot bathCompare the color with test tube #1 Observe the color change #7: Drop 0.1M AgNO3Drop until the color disappears Observe the color change Chemical wastes: Dispose tubes containing thiocyanide ion (SCN-) to the toxic container EQUILIBRIA OF PRECIPITATION REACTIONS #1: Add 5mL 0.1M CaCl2  1mL 0.1M Na2C2O4 Observe the color #2: Add 5mL CaCL2  Add 1mL H2C2O4  Observe the color and compare with #1  Add 10 drops 6M HCl  Observe the color change  Add 10 drops 6M NH4OH  Observe the color change TEMPERATURE EFFECTS ON EQUILIBRIAs First, add 3mL 0.1M CoCl2, then add conc HCl drop-by-drop (Stop when solution turn to purple-violet Do again if deep blue appears) #1: Room temperature  Observe the color #2: Warm up by hot water  Observe the color and compare with #1  Cool down with ice bath  Observe the color and compare with #1 #3: Cool down by ice bath  Observe the color and compare with #1  Warm up by hot water bath  Observe the color and compare with #1 Chemical waste: Dispose cobalt ion(Co2+) to the toxic waste