easy to observe a change in colour while titrating. The solution gradually decolorized after reaching the permanganate end point due to the reaction between MnO4- and Mn2+‚ so the end point is read as quickly as possible. 2 mL of H3PO4 solution reacts with Fe3+ to produce Fe (PHO4)2- ‚
Free Titration
Unknown 2 Scheme “ Fair game” ions Cations: Na+‚ K+‚ NH4+ ‚ Ca2+‚ Mg(OH2)62+ ‚ Al(OH2)63+ Anions: SO42-‚ HSO4-‚ NO3-‚ OH-‚ Cl-‚ CO32-‚ HCO3- Insoluble Compounds: Ca(OH)2‚ CaSO4•2H2O‚ CaCO3‚ MgCO3‚ Mg(OH)2 I. Describe Sample a. Quick description of sample. Ex: Phase‚ color‚ odor‚ crystalline‚ amorphous‚ gel-like‚ powdery‚ etc. II. Flame Test a. Part 1 i. Orange Flame: Na+ is present. K+ ‚ NH4+ ‚ Ca2+‚ Mg(OH2)62 ‚ Al(OH2)63+ may also be present. ii. Purple Flame: K+ is present (no Na+
Premium Ion Chemistry Atom
Mechanical Engineering Department. Mechanics of Machines 2 Student no: Date of Laboratory experiments: Place: Date completed: Due Date: Experiment 1: The Plate Clutch Objective: The Aim of this experiment is to find the relation between the axial load W and the frictional torque T‚ using a single plate clutch. To find the coefficient of friction between the clutch surfaces using the uniform wear theory. To experimentally conclude whether the average
Free Force Friction Mass
OCR B (Salters) AS level Chemistry UNIT 2 – F332 Elements from the sea Halogens and Halides (group 7 chemistry) * Halogen is the elemental molecule‚ eg/ Cl₂‚ Br₂ * Halide is in a compound‚ eg/ KBr‚ KCl | Fluorine | Chlorine | Bromine | Iodine | Appearance at room temp | Pale yellow gas | Green gas | Dark red volatile liquid | Shiny black solid – sublimes to purple gas | Halide | Colour precipitate with silver nitrate | KCl | White | KBr | Cream | KI | Pale Yellow |
Premium Chemistry Chlorine Electronegativity
router# Global configuration #configure Line Configuration (config-map-class)# Interface Configuration (config-if)# Router Configuration (config-line)# 3-2 Basic Configuration Exercise 1. Router(config)#hostname AUS 2. AUS(config)#enable password class‚ AUS(config)#enable secret class 3. If both are configures‚ the enable secret password can be used. The enable password command is ignored. Therefore‚ you do not need to configure
Premium Internet service provider
Deciding on which cybersecurity program to use to protect clients’ login and password is always a gamble. OAuth 1 and OAuth 2 are the two most popular protocols used to safeguard client information. This protocol is used by major corporations including Twitter (Twitter Developers Documentation‚ n.d.) and Instagram (Authentication‚ n.d.)‚ OAuth or Open Authorization) is a program which was developed to protect client passwords and information from other third-party applications. Generally‚ O-Auth
Premium Computer security Security Information security
Chem 102 - Lab #2 Quantitative Analysis of a Soluble Sulfate Steven English Lab Instructor: Dr. Campo Date: Tuesday‚ February 5th 2013 Pre-Lab Questions A. Adding the acid to the sodium sulfate solution results in an increase in the solubility of any free anions present in the sample. This will happen because the present anions will bind with the hydrogen cations present in the acid. B. The sodium sulfate is boiled because experiments have shown that barium sulfate is 50
Premium Solubility Chemistry Ion
All the reagents and solvents used for synthesizing the title compound were of Analar grade (Merck) and were used as such without further purification. The 2-naphthol derived Mannich base 1-((4-methylpiperazin-1-yl)(phenyl)methyl)naphthalen-2-ol (MPN) was synthesized according to the general procedure described in the literatures [13‚ 14]. The 2-naphthol (4.33 g‚ 0.03 mol) was dissolved in 30ml of ethanol and it was mixed with N-methylpiperizine (3.0 mL‚ 0.03 mol) by continuous stirrer at room temperature
Premium Water Chemistry Oxygen
Lab #2 - Assessment Worksheet Using Access Control Lists to Modify File System Permissions on Windows Systems Course Name and Number: ISSC342 Student Name: Benson K kungu Instructor Name: Peter Mylonakos Lab Due Date: June 14‚ 2015 Overview In this lab‚ you used the Windows command-line utility‚ icacls.exe‚ to establish file level permissions following a set of access control requirements. You tested those permissions by remotely accessing the Windows server and attempting to modify files
Premium Access control list File system File system permissions
reasons on why the resting heart rate can fluctuate over time. Factors can include things like the temperature of the room we were in‚ or what we ate/ drank for breakfast. Also volume of liquid or chemicals in the cell can impact the heart rate. 2) Is the average resting heart rate for the exercise and non-exercising group different? Provide a physiological explanation for why they are similar or different. In the data that our class collected‚ the average heart rates for the exercising and non-exercising
Premium Heart rate Exercise Autonomic nervous system