6-2 Lab Assignment Ranking Salt Solutions by Ph Essay

Ranking Salt Solutions by pH 6-2: Ranking Salt Solutions by pH In this assignment you will be asked to rank aqueous solutions of acids, bases, and salts in order of increasing pH. This is most easily done by first identifying the strong acids that have the lowest pH, the strong bases that have the highest pH, and the neutral solutions that have a pH near 7. The weak acids will have a pH between 1 and 6 and the weak bases between 8 and 14. The exact order of weak acids and weak bases is determined by comparing the ionization constants (Ka for the weak acids and Kb for the weak bases). After ranking the pH of these solutions, you will then test your predictions in the laboratory. 1. Arrange the†¦show more content†¦Drag the 25 mL cylinder to the beaker on the stir plate and empty it into the beaker. Place the pH probe in the beaker and record the pH in the data table. Drag the beaker to the red disposal bucket. Double-click the bottle of NaHCO3 to move it to the Stockroom counter. Repeat steps 5 and 6 for KNO3. 7. Click in the Stockroom. Double-click on the bottles of NH3 and H2SO4 to move them from the shelf to the counter and return to the laboratory. Drag the bottle of NH3 to one of the three spotlights on the lab bench. Place a beaker from the drawer on the stir plate. Drag the bottle of NH3 to the 5 mL graduated cylinder (the smallest one) by the sink and fill the cylinder by dropping the bottle on the cylinder. Now drag the 5 mL graduated cylinder to the beaker on the stir plate and add the 5 mL of NH3. Add 20 mL water to the beaker by filling and emptying the 10 mL cylinder into the beaker twice. Place the pH probe in the beaker and record the pH in the data table. Drag the beaker to the red disposal bucket. Double-click on the NH3 bottle to move it back to the counter. 8. Repeat step 7 with H2SO4, except that you should use a 10 mL graduated cylinder of H2SO4 and adding 15 mL water. 9. Each of the other solutions is already approximately 0.1 M. With these solutions you can pour a smallShow MoreRelated_x000C_Introduction to Statistics and Data Analysis355457 Words   |  1422 Pagesthomsonrights@thomson.com. Printed in the United States of America 1 2 3 4 5 6 7 11 10 09 08 07 ExamView  ® and ExamView Pro  ® are registered trademarks of FSCreations, Inc. Windows is a registered trademark of the Microsoft Corporation used herein under license. Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc. Used herein under license. Library of Congress Control Number: 2006933904 Student Edition: ISBN-13: 978-0-495-11873-2 ISBN-10: 0-495-11873-7 ââ€"   To my nephews, JesseRead MoreCost Accounting134556 Words   |  539 PagesSolutions Manual for COST ACCOUNTING Creating Value for Management Fifth Edition MICHAEL MAHER University of California, Davis Table of Contents Chapter 1 Cost Accounting: How Managers User Cost Accounting Information Chapter 15 Using Differential Analysis for Production Decisions Chapter 2 Cost Concepts and Behaviour Chapter 16 Managing Quality and Time Chapter 3 Cost System Design: An Overview Chapter 17 Planning and Budgeting Chapter 4 Job Costing ChapterRead MoreAn Evaluation of an on-Farm Food Safety Program for Ontario Greenhouse Vegetable Producers; a Global Blueprint for Fruit and Vegetable Producers51659 Words   |  207 Pagescontinue to fund real-world practical research and continue to develop the food safety professionals of tomorrow. February 6, 2005 Ben TABLE OF CONTENTS Chapter 1. A Review Of Current And Relevant Publications Relating To The Development Of Risk-Based On-Farm Food Safety Practices For Produce In Canada. 1 Introduction 1 Microbial food safety 2 Risk analysis 5 Risk 7 Risk-based food systems 14 Microbial food safety risks and produce 18 Factors of pathogen contamination