Material Science Hardness Test Lab Report | Hardness | Applied And Interdisciplinary Physics

 

hardness test lab report

Material Science Hardness Test Lab Report - Free download as Word Doc .doc /.docx), PDF File .pdf), Text File .txt) or read online for free. hardness test4/5(18). Brinell hardness test is performed to find the hardness typically called the Brinell hardness. Recommended: Bernoulli Experiment Lab Report. Procedure. Brinell hardness test in perform in such a way that first of all a work piece made of desire material is obtain and is fixed on the plate form of the brinell hardness testing viguzgas.ga: Green Mechanic. general steps to performing a tensile test on a reduced gage section specimen. The data used for this lab report was not gathered from the student run experiments, but rather from standardized testing performed by the laboratory professor, to ensure accurate and consistent results.


(DOC) EXPERIMENT 3 HARDNESS TEST | Min YIh - viguzgas.ga


In this experiment, the hardness of an unknown water sample will be determined. The calcium in the water will be measured by performing a titration with EDTA. Eriochrome Black T will be used as an indicator. Standardization of EDTA will be performed first and then the determination of calcium concentration. After standardizing the EDTA, the average molarity was found to be 0. The calcium concentration was found to be Complexometric titrations are titrations that can be used to discover the hardness of water or to discover metal ions in a solution.

Ethylenediaminetetraacetic acid, also known as EDTA, is commonly used in complexometric titrations. In a complexometric titration, an ion is transformed into a complex ion.

The equivalence point is determined by a metal indicator. Erichrome black T is an indicator that can be used to determine calcium content in a solution. The complex that is initially formed is red. After all the calcium ions have reacted, the complex then turns blue. In the experiment, EDTA will first be made and then standardized. This will be done by preparing hardness test lab report calcium chloride solution, hardness test lab report.

In the reaction hardness test lab report the EDTA, calcium carbonate is converted to calcium chloride. Ammonia-ammonium chloride will also be prepared to be used as a buffer in the solution. The professor prepared the Erichrome black T to be used as an indicator.

This indicator will be cause the solution to be red at the before the titration and then at the endpoint, the solution will turn blue. Make sure it is blue and not purple. After the standardization of EDTA, the calcium content in an unknown water sample will be found.

This will be done with same way as the first titration occurred. The hardness will then be calculated in parts per million. To begin this experiment, prepare 0. Weight out about 4, hardness test lab report.

Dissolve the solids in water and transfer this solution into a clean 1 liter volumetric flask. Dilute with water to the line. If the solution is turbid, add a few drops of 0. Mix solution thoroughly, hardness test lab report.

Next prepare a standard calcium chloride solution. To do this, hardness test lab report, weigh accurately about 0. Transfer the solid to a mL volumetric flask and dissolve with about mL of water.

Dilute with water to the mark and mix the solution thoroughly. This reaction converts calcium carbonate to calcium chloride as shown below:. Prepare an ammonia-ammonium chloride buffer by dissolving about 6. Transfer to a mL volumetric flask and dilute to the mark. Make sure to handle concentrated ammonia in the hood.

The Erichrome Black T was prepared by the professor by dissolving 0. Solutions older than 2 months should not be used. Now, standardize the EDTA solution. Pipet 50 mL portions of the calcium chloride solution into three mL Erlenmeyer flasks. Add 5 mL portions to each flask of the ammonia-ammonium buffer and 5 drops of Erichrome Black T indicator, hardness test lab report. Titrate this solution with EDTA to the point where the color changes from wine-red to pure blue. Do not stop titrating at a violet or purple color.

Make sure the Erichrome Black T indicator is prepared fresh. Repeat this titration with all three trials and record the volume. Determine the unknown calcium concentration in a sample of water. Pipet 50 mL portions of unknown water into three mL Erlenmeyer flasks. Add 5 mL of ammonia-ammonium buffer and Erichrome Black T indicator. Titrate with EDTA until a hardness test lab report color appears. The results from this experiment were very reasonable.

In the first part of the experiment I found the average molarity to be 0. We were supposed to make a solution with a molarity of 0. In the second part of the experiment we found the hardness of a water sample. This was done through finding the calcium content in the water. All three trials of this yielded similar results indicating they are accurate. The average calcium content found was Because two of the trials showed results of ppm and one had the result of ppm, this indicates that the actual hardness of the water was closer to ppm.

The hardness of water is structured by a numerical range. Soft water has a ppm between 0 and Moderately hard has a range of Hard is between and Anything over hardness test lab report is considered very hard. Our sample was in the hard range of the scale, hardness test lab report.

If I were to do this experiment again, it would be helpful to put in more indicator at the beginning, hardness test lab report. One trial I did had not turned blue yet. After adding a couple more drops of indicator, the color changed immediately to blue. The end point had already been passed. In the next trials I added more indicator before starting and ended with much more accurate results. It was difficult in this lab to tell exactly when the endpoint occurred because the color changed to violet before blue, hardness test lab report.

It was hard to distinguish between these colors sometimes. A more abrupt color change would have been better in order to ensure more accurate results. In conclusion, the results from this experiment were reasonable.

The hardness of a water sample was successfully discovered by finding the calcium content in the sample. The calcium content from the three trials performed were The average of these three trials with standard hardness test lab report was This showed that the water fell into the range of numbers indicating hard water. Browse Documents.

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hardness test lab report

 

3. Detailed explanation for Vicker Hardness test 4. Detailed explanation to test Rockwell hardness. In this report I have tried my best to summarize all the things that I have learnt during my stay at Rine Engineering Pvt Limited,Baddi,India, in simple and effective manner. After going through this report. Lab Report Requirements 1. Results List hardness values of Rockwell and Brinell for each specimen. List VHN versus distance from surface for carburized specimen. Determine the effective carburizing depth that corresponds to VHN 2. Discussion (only those indicated will be answered in the lab report) 1. Apr 01,  · Because two of the trials showed results of ppm and one had the result of ppm, this indicates that the actual hardness of the water was closer to ppm. The hardness of water is structured by a numerical range. Soft water has a ppm between 0 and Moderately hard has a range of Hard is between and