Determination Of Cu2+ By Titration Essay

658 words - 3 pages

Determination of Cu2+ by Titration

Introduction:

The purpose of this lab is to determine the concentration of copper ions in an unknown solution. Complexometric titration will be used to determine the concentration. A buret will be used to deliver the complexing agent to the unknown solution. Ethylenediaminetetraacetic acid will be used as the complexing reagent. An indicator, Murexide in our case, will be used to indicate the endpoint of the reaction.

Theories and Concepts:

The anion of the acid, EDTA4-, will complex to the metal. This anion reacts with the metal by forming coordinate-covalent bonds with the metal. This is a coordination compound. This ligand is called a chelate because it can form coordinate-covalent bonds by wrapping itself around the metal. A total of six coordinate covalent bonds are formed between the copper cation and the ligand. The Murexide indicator will mix with the blue copper solution to form a compound that is purple. As soon as an exact amount of the ligand is titrated and binded to all of the metal in the solution the color of the solution will change immediately. The reaction in this lab is Cu2+In + EDTA4-  Cu2+ EDTA4- + In.

Procedure:

Measure exactly 25.0 mL of your unknown copper solution into a graduated cylinder and place it in a 250 mL Erlenmeyer flask.
Add 10 mL of 1 M NH4Cl to this it and mix the solution by swirling
Add 5 mL of 1 M NH4¬OH and notice the color change
Add 15 drops of Murexide indicator to the dark blue solution. This will turn the solution to a violet color.
Fill a buret with the standard EDTA4- solution to a point somewhere between the 0 and 2 mL mark and carefully read the initial volume of the buret. Record it.
Record the molarity of the EDTA4- solution.
Slowly titrate the EDTA4- solution into the copper solution.
Swirl constantly, and the solution will gradually turn yellow
Continue titrating and when the...

Find Another Essay On Determination of Cu2+ by Titration

To determine the % by mass of manganese (IV) oxide in a solid sample. ( By Titration )

514 words - 2 pages thiosulphate solution until it became pale yellow in colour.4. Few drops of starch as indicator were added to the solution.5. Titration was finished when the colour of the solution changed from blue to colourless.6. Further 2 accurate titrations were performed.Part B1. All instruments were washed by using deionised water.2. 1g of the solid manganese(Ⅳ) oxide was weighted and put into a conical flask.3. 25cm3 of 1M potassium iodide was

Determination of Molecular Weight of a Protein by Gel Filtration

3339 words - 13 pages chromatography separates molecules based on their electrical charges while affinity chromatography isolates a protein from a mixture. Materials and Methods The procedure our group used for the experiment of Determination of Molecular Weight of a Protein by Gel Exclusion Chromatography was taken from the University of Texas at San Antonio Lab Manual by Dr. Kumar (pages 7-8, experiment 6: Determination of Molecular Weight of a Protein by Gel Exclusion

Determination and Perseverance in Life of Pi, by Yann Martel

836 words - 4 pages barbaric acts, emphasizes the key idea of survival. Determination and perseverance is evident in the actions executed by Pi, the zebra and the hyena, assisted by their sheer will to live. The main protagonist, Piscine Patel displays an innate desire for survival as he demonstrates his versatility through to the absence of refinement. His morality is shattered, as he comes across the dire circumstances of his ordeal. This is evident when Pi abandons

The Theme of Determination in “A Worn Path” by Eudora Welty

677 words - 3 pages Everyday people encounter challenges that stand in their way of achieving their goals, but with sheer determination most accomplish their mission. In the short story “A Worn Path” written by Eudora Welty, Phoenix Jackson, the main character, has a mission to complete while confronting many challenges. One way to convey this idea is with the literary use of theme. The theme of a literary work is defined as the central idea, concern or message

The Importance of Determination in Hattie Big Sky by Kirby Larson

1201 words - 5 pages Hattie Big Sky, written by Kirby Larson, describes the life of a sixteen-year-old girl named Hattie during the early 1900’s. The story gives the reader a closer look into Hattie’s orphan life and orphan life during that time period in general. Also, the story conveys that with determination anyone can create the future they most desire for themselves. Although the story’s beginning was rather depressing, Hattie’s positive and courageous

Quantitative Determination of Sulfate by Gravimetric Analysis

559 words - 2 pages SynopsisThe objective of this experiment is to find out the different mechanical properties of General Purpose Polystyrene (GPPS), High Impact Polystyrene (HIPS), High Density Polyethylene (HDPE) and Polypropylene (PP). We obtained the average tensile strength, tensile modulus and yield strength of each specimens by using LLOYD tensile testing machine. We found out that GPPS specimens having the highest tensile strength and tensile modulus, and

"To Kill a Mockingbird" by Harper Lee shows, through the use of irony and characterization, that ignorance is present in the town of Maycomb and how determination can combat prejudice

944 words - 4 pages marches. The novel To Kill a Mockingbird, by Harper Lee, is about Scout and her brother Jem growing up in the racist town of Maycomb, Alabama. The message that Harper Lee is trying to get across is that ignorance causes prejudice, but can be defeated through the determination of others when they stand up for what is right. Through the use of irony and characterization Lee shows the ignorance that is present in the town of Maycomb and how

“Determination of Aurora-A amplification in colon cancer by copy number PCR as a biomarker of resistance to chemotherapy”.

2062 words - 9 pages Chromosomal instability is a central feature of many tumours and is present in about 85% of colorectal tumours. It is characterised predominantly by frequent chromosomal abnormalities which include translocations, gains, and losses of entire chromosomes or their segments [Grady, 2004; Baba, 2009]. Although the causes of chromosomal instability are still poorly understood it is thought to arise as a result of mutation and amplification of a

Chemistry: What is A Complexometric Titration

3189 words - 13 pages [image on the internet].No date [cited 2014 Mar 17]. Available from:http://www.chemguide.co.uk/inorganic/complexions/bidentate.gif EDTA [image on the internet]. No date [cited 2014 Mar 17]. Available from: http://www.chemguide.co.uk/inorganic/complexions/edta.gif Determination of Calcium by Titration with EDTA [homepage on the internet].c2013[cited 2014 Mar 18]. Avalable from: http://www.nmt.edu/~fletcher/labs/lab03

Titration Scientific Report

483 words - 2 pages Year 10 chemistry2014Extended Experimental InvestigationSCHWEPPEVESENCE -FACT OR FICTIONIntroductionIn this experiment, we try to find out the reaction between Schweppes and weak acid. Acid-base titration is a chemical measurement methods, the Department of strong acid or base titration with alkali or acid solution by titration graphs or color change indicator titration end point determination, it can be roughly determined the concentration of

Acid-Base Titration Chemistry Formal Lab Writeup by A.Mm

1532 words - 6 pages , titration is a vital tool in determining the factors of many commercial and environmental systems.Therefore, knowledge of acid-base titration curves is critical to the environmental scientist. Titration, an analytical technique, allows the quantitative determination of a dissolved substance being titrated, known as an analyte. Titration requires knowledge of the equivalence point: a theoretical point where the chemical equivalents of titrant

Similar Essays

Determination Of An Unknown Amino Acid From A Titration Curve

1691 words - 7 pages difficult to remove the proton.The trapezoidal method can be employed to find the equivalence points as shown if figure 6. Thevolume of titrant between two equivalence points is helpful in the determination of the molecular weightof the amino acid.Fig. 6The purpose of experiment 11 is to determine the identity of an unknown amino acid by analyzing atitration curve. The experiment should lend the idea that the following may be directly or

Determination Of Zinc And Nickel Concentration By (1) Ion Exchange Chromatography Followed By Chelometric Titration, And By (2) Atomic Absorption Spectroscopy Of The Mixture

1331 words - 5 pages Determination of Zinc and Nickel Concentration by (1) Ion-Exchange Chromatography Followed by Chelometric Titration, and by (2) Atomic Absorption Spectroscopy of the MixtureExperiment 4Dates of Experiment: 10/14/08 through 10/30/08Date of Report: 11/7/08Chem 2262LI. IntroductionIn this experiment, the zinc and nickel contents of unknowns were tested using two methods. In the first method, nickel and zinc were separated through ion-exchange

Determination Of Sulfur By Precipitation Gravimetry

295 words - 2 pages salts, and the ignited precipitate contains the salt or oxide as an additive impurity. The coprecipitation of chloride can be decreased by slow addition of the precipitant. Since nitrate and chlorate interfere even at low concentrations, they should be removed from the solution before precipitation.Foreign cations such as ferric iron, calcium and, to a lesser extent, the alkali metals are coprecipitated as the sulfates. These are substitutional

Quantitative Determination Of Sulphate By Gravimetric Analysis

1614 words - 6 pages Analytical & Physical Chemistry ( CP4001)Experiment 4:Quantitative Determination of Sulphate by Gravimetric AnalysisFormal ReportName: Chia Kok SiongAdmin no: 1027325Class: DFST/FT/2B/21SynopsisThe objective of this experiment is to determine the amount of sulphate by gravimetric analysis. The amount of sulphate is determined quantitatively as barium sulphate, BaSO4, by gravimetric analysis. For the experiment, a dilute solution of barium
Ver más | For 2000-2004 Toyota Avalon Pair Chrome Housing Amber Corner Headlight/lamp Set | NN Launcher - Nice Native Nougat Launcher in 2019 PRIME APK