Quantitative Analysis by Spectrophotometric Methods
In this experiment, the absorbance of KMnO4 was measured by spectrophotometric method to determine the molar concentration and the molar extinction coefficient of KMnO4. In part 1, in order to determine the maximum absorbance wavelength of KMnO4, we measured the absorbance of the sample solution which contains KMnO4 at the wavelengths between 330nm and 660nm, and plotted the λ and A points; the λmax was 530nm. In part 2, the effect of concentration on the absorbance was examined. We prepared five differently concentrated (but, same path length) solutions, and measured the absorbance of them at the λmax(530nm) discovered in part 1; According to the results, higher concentrated solution had higher absorbance value. The extinction …show more content…
Another factor that affects the amount of light a sample absorbs is the path length which is the length of sample that the light passes through. The path length is represented by the symbol l and is typically measured in centimeters. When the light travels through longer distance, it will strike more absorbing molecules, so more light will be absorbed, and less light will be transmitted. The relationship of two factors (path length & concentration) can be combined to yield a general equation called Beer's Law.
 log10T = A = εlC (3)
The quantity ε is the molar absorptivity; in older literature it is sometimes called the molar extinction coefficient. It is the measure of how strongly a substance absorbs light at a particular wavelength; a larger extinction coefficient means that substance absorbs more light. The units of ε are usually in M1cm1 or L mol1cm1. A is the absorbance of

Quantitative Analysis of Soda Ash by Double Indicator Method
1942 Words  8 PagesQuantitative Analysis of Soda Ash by Double Indicator Method Results and Discussion The experiment focuses in the use of double indicator titration in quantitative analysis of soda ash sample. Titration refers to the process of measuring the volume of titrant required to reach the equivalnece point. This method of analysis, is based on the chemical reaction aA + bB → products (1) where a is the molecules of the unknown substances to be analyzed or the analyte. Analyte reacts with b molecules…

Quantitative And Quantitative Methods Of Methods
3360 Words  14 Pagesterms of techniques the study uses in collecting data, followed with a detailed analysis and the way in which they will be interpreted. The chapter starts with a brief discussion of how the general research designs for the whole study and its basic layout. After that, a discussion of previous studies and models that were applied would be present and an explanation of why this specific qualitative and quantitative study method is employed will be following, as well as their suitability. Finally, the sources…

Quantitative Analysis of Soda Ash by Double Indicator Method
2732 Words  11 PagesQuantitative Analysis of Soda Ash by DoubleIndicator Method Mark Steven R. Santiago and Kristiene B. Sadiwa Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101 Philippines Date/s Performed: July 13, 2012; Date Submitted: July 19, 2012 Results and Discussions A mixture of carbonate (CO32), bicarbonate, (HCO32) and hydroxide (OH) ions can be analysed and determined by titration with strong standard acid solution. Volumetric titrimetry can be employed to compute percent…

Spectrophotometric Analysis of Kmno4 Solution
1701 Words  7 PagesExperiment # 9: Optical Method of Analysis Use of Beer’s Law on a KMn04 Gregorio, Justin Edrik A. March 2013 Department of Chemical Engineering, Faculty of Engineering University of Santo Tomas España, Manila Abstract The purpose of this analytical laboratory experiment is to determine the unknown concentration of potassium permanganate (KMnO4) solution by finding its absorbance through the use of spectrophotometer. The preparation of four known concentration of KMnO4 was done namely, 2…

MGMT 1P96 Winter 2015 QUANTITATIVE METHOD OF CASE ANALYSIS
3282 Words  14 Pages1/2/3/4 Quantitative Method of Case Analysis SWOT Analysis Financial Analysis Case analysis guideline description This document was prepared by Frances Tuer and edited by Jacqueline Glenney and Michael Robertson. It was designed to help students in MGMT 1P96 understand the case analysis process. STEP # 1  SITUATION ANALYSIS The situation analysis is where you have to clearly demonstrate that you understand the company and its current situation. The two parts to this analysis are the Overview…

Quantitative Methods and Analysis Unit 1 Db
755 Words  4 PagesQuantitative Methods and Analysis Unit 1 DB Leonidas Murembya July 22, 2013 My first choice is the facetoface data collection method.The population health surveys trend to rely on five main methods of data collection, the one that I am doing is the FacetoFace interview. Most of them in this study chose to do the facetoface interview. The facetoface is also known as FTF. The facetoface interview method was done on the Population Surveys of Children’s Health and Wellbeing: Parental Views…

Quantitative And Quantitative Research Methods
1520 Words  7 Pagesspecific methods needs to be included to acquire relevant data. The research should be guided by a specific research problem or hypothesis which takes the researcher to the direction needed to acquire information. Data collection and interpretation are a requirement for completing the research process. Deciding on a research method or approach is part of the planning process and should be part of the priorities of any research plan due to the boundaries and differences between the research methods (Garza…

Statistical Analysis And Quantitative Methods
836 Words  4 Pagesthis course was very helpful in expanding my knowledge pertaining to statistical analysis and quantitative methods. Although I had some knowledge going into this semester from prior classes, I felt uneasy about statistical analysis and its applications. There were so many elements I had questions about and a variety of factors I wished to understand but that were unclear. Specifically, advanced statistical methods seemed to be shrouded in mystery – complex, indecipherable, abstract, and inaccessible…

Quantitative And Quantitative Methods Of Research
3747 Words  15 Pages3. Method 3.1 Research Approach Although there are two types of research approaches that can be used by researchers depending on the type of research study which are qualitative or quantitative study, however, a quantitative research method will be used in order to acquire the useful information. The research design mentions to the general approach that is selected to assimilate the different mechanisms of the research in an intelligible and rational way, thus, safeguarding that it will efficiently…

Qualitative vs. Quantitative Analysis: Evaluating Scientific Methods
642 Words  3 Pagesthe scientific method. The term scientific method refers to a way of investigation or the acquisition of knowledge through the testing of a theory or hypothesis, then working through measurements (observation and empirical notes) to come up with a result, which should prove or disprove the original theory (Johnson & Christensen, 2009; Cary, 2008). Within most environments, there are several basic issues that can be studied either quantitatively or qualitatively, or with a mixed method. There is no…
More about Quantitative Analysis by Spectrophotometric Methods

Quantitative Analysis of Soda Ash by Double Indicator Method
1942 Words  8 Pages 
Quantitative And Quantitative Methods Of Methods
3360 Words  14 Pages 
Quantitative Analysis of Soda Ash by Double Indicator Method
2732 Words  11 Pages 
Spectrophotometric Analysis of Kmno4 Solution
1701 Words  7 Pages 
MGMT 1P96 Winter 2015 QUANTITATIVE METHOD OF CASE ANALYSIS
3282 Words  14 Pages 
Quantitative Methods and Analysis Unit 1 Db
755 Words  4 Pages 
Quantitative And Quantitative Research Methods
1520 Words  7 Pages 
Statistical Analysis And Quantitative Methods
836 Words  4 Pages 
Quantitative And Quantitative Methods Of Research
3747 Words  15 Pages 
Qualitative vs. Quantitative Analysis: Evaluating Scientific Methods
642 Words  3 Pages