Trinity Grammar School Year 12 HSC Chemistry Semester 1 Examination (April‚ 2010) This examination contributes 15% towards your final assessment Time Allowed: 3 hours (plus 5 minutes reading time) Student Number:________________________________________ Format of paper Part A: 20 multiple choice questions (worth 1 mark each). All answers must be entered in the special multiple choice Answer sheet provided. Part B: Free response questions worth 80 marks in total. All answers must be written
Premium PH Acetic acid Sulfuric acid
(C2H4) * Functional group = highly reactive double C=C bond * Readily transformed into many useful compounds ( polyethylene) through addition reactions * Examples: ethylene oxide (CH2)2O -> sterilizer Ethanol (C3COOH) -> solvent Polyethylene (CH2)n -> plastic 1D – identify that ethylene serves as a monomer from which polymers are made * Individual monomers of ethene join by covalent bonds to form long chain polymers 1E – identify
Premium Ethanol Electrochemistry Oxygen
is shown below: 2 H3C–COOH + 2 C2H4 + O2 → 2 H3C–CO–O–CH=CH2 + 2 H2O Vinyl acetate synthesised is used for production of polyvinyl acetate. Acetic anhydride Acetic anhydride can be synthesized by condensation reaction of two molecules of acetic acid. The main process involves dehydration of acetic acid to give ketene at 700-750 °C. Ketene is thereafter reacted with acetic acid to obtain the anhydride: CH3CO2H → CH2=C=O + H2O CH3CO2H + CH2=C=O → (CH3CO)2O Acetic anhydride is an acetylating agent
Premium Oxygen Alcohol Hydrogen
2000 NAME 1. [10 points] What are the concentrations of HSO− ‚ SO2− ‚ and H+ in a 0.20 M KHSO4 solution? (Hint: 4 4 H2 SO4 is a strong acid; Ka = 1.3 × 10−2 for HSO− .) 4 2. [15 points] Calculate the pH of 1.00 L of the buffer 1.00 M CH3 COONa/1.00 M CH3 COOH (pKa = 4.74) before and after the addition of (a) 0.080 moles NaOH and (b) 0.12 moles HCl. (Assume there is no change in volume). 3. [10 points] The following reaction is found to be first order in A: A −→ B + C If half of the starting
Premium Acid dissociation constant Enzyme inhibitor Chemical kinetics
13747 CH3.qxd 11/22/08 12:22 PM Page 44 MODULE 3 Overcoming Communication Barriers MODULE OVERVIEW Being able to effectively communicate—or participate in the exchange of information—is an essential skill for dental health care providers. For many dental health care providers in the United States today‚ providing patient-centered care involves learning to communicate effectively with patients even when various barriers to communication are present. This module presents strategies
Premium Communication Health care provider Hearing impairment
Karen Russo Donovan‚ Ph.D. West Virginia University BADM 522 CRN: 52861 Business Research/Statistics Summer 2013 Tuesday‚ Thursday 8:30am – 11:20am Instructor: Dr. Karen Russo Donovan Office: 448 College of Business & Economics Office Phone: 304-293-7957 e-mail Karen.Donovan@mail.wvu.edu Office Hours:: After class and by appointment GENERAL COURSE INFORMATION Course Description: The primary objective of this course is to expose you to issues involved in
Premium Statistical hypothesis testing Null hypothesis Scientific method
Argosy University Ed.D. Organizational Leadership COURSE SYLLABUS L7431 Theory and Development of Motivation Faculty Information Faculty Name: Campus: Contact Information: Office Hours: Short Faculty Bio: Course description: This course covers the theory and development of motivation. Major interest is placed on motivation‚ models‚ and strategies for enhancing motivation in individuals and groups‚ variables affecting (and affected by) motivation and environmental influences on motivation
Free Motivation
Experiment #8 – properties of Alcohols and Phenols Introduction As has been mentioned before‚ over 20 million organic compounds have been identified. If each substance had to be studied as an entity completely separate from all the other substances‚ the study of organic chemistry as a whole would be impossible; that is to say‚ even more impossible than you currently believe it to be. Fortunately‚ the subject can be organized and it is often organized around the concept of the functional group
Premium Alcohol Functional groups Functional group
Chemistry 1211 Prof. Dan Schwartz Exam #2 Thursday‚ 3/13/2003 7:00 – 8:30 P.M. There is a single correct choice for each question. Answer all questions on the Scantron sheet by filling in the proper bubble with a #2 pencil. If you change an answer‚ erase the undesired mark thoroughly. Be sure to fill in the boxes for your student number‚ name and lab section; then correctly fill in the corresponding bubbles beneath them. A periodic table and other useful information are attached to the back
Premium Periodic table Trigraph Pressure
Experiment 4: Conductivity of electrolyte solutions (Dated: October 29‚ 2009) I. INTRODUCTION Pure water does not conduct electricity‚ but any solvated ionic species would contribute to conduction of electricity. An ionically conducting solution is called an electrolyte solution and the compound‚ which produces the ions as it dissolves‚ is called an electrolyte. A strong electrolyte is a compound that will completely dissociate into ions in water. Correspondingly‚ a weak electrolyte dissolves
Premium Electric charge Electrochemistry Electricity