In this experiment spinach‚ DPIP‚ phosphate solutions were placed under various filters and the percent orange light transmittance through the solution was measured to determine the rate of photosynthesis. This experiment was set up to discover how different wavelengths of light affect the rate of photosynthesis in a spinach‚ DPIP‚ phosphate solution. I proposed that the spinach‚ DPIP‚ phosphate solution under no filter‚ and therefore exposed to all light will have a highest percent orange light
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Chemistry Lab Question Bank (2014-2015) Topic: Introduction 1. What is a standard solution? 2. What is a primary standard solution? Give examples. 3. What is a secondary standard solution? Give examples. 4. What is a link solution? 5. Why is KMnO4 not a primary standard solution? 6. Define equivalent weight? 7. Define end point and equivalence point? 8. Why solutions of HCl and NaOH are not primary standard solutions? 9. How many types of titrations are there? Give examples. 10. Define Molarity
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Determining Red 40 Concentrations Using Absorption with Beer’s Law Introduction I like color and enjoyed learning about wavelengths and the spectrum of light‚ so I considered incorporating something related to that into my Internal Assessment. We also had just used concentrations in our Group 4 Project‚ so when I found an experiment that dealt with both of these I thought it was a great idea. This experiment is not completely original; the basic concept has been used multiple times. It uses Beer’s
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different boiling tubes‚ which contained three different standard solutions of Ethanol‚ they were left for half an hour at a certain temperature to get the dye out. Once the time was up‚ the solutions was added to cuvettes and inserted into the colorimeter to test how much light was passed through the sample. Preliminary Work: Before the experiment was started‚ a
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Task 3 For part of this task‚ I gathered information from a technician that works in the science department. This enabled me to gather primary information‚ giving me a basic understanding of the storage and practices within the lab before researching them on the internet. Chemical store management When storing chemicals‚ they are put into different categories‚ for example; flammables‚ corrosives‚ irritants etc. All of these different categories are stored in an external store. They are stored externally
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the results of the intensity of the color and the absorbance of the liquids with the different solvents. Solvent Results from colorimeter 0.001 Acid (Hydrochloric) 0.358 Ethanol 0.132 Hot water 0.984 Cold water-distilled water (control) 0.057 CONLUSION: The results show that hot water gave the highest average absorbance reading from the colorimeter‚ followed by hydrochloric acid‚ ethanol and cold water‚ in descending order of absorbance. The absorbance of the solvent that was
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changed during the reaction. The concentration of crystal violet will be of 4×10-5 M and the concentration of sodium hydroxide will be of 0.20 M. ASPECT 3: developing a method of obtaining data Materials: * 1 water bath * 1 Vernier colorimeter * 90mL of 0.20M Sodium Hydroxide * 90mL of 4×10-5M of Crystal Violet * 2‚ 125mL (± 5ml) beakers * 2‚ 50mL (± 5ml) beakers * 2 measuring cylinders‚ 10mL (±0.5ml) * 1 Thermometer (±1 °C) * Ice * Hot water Safety
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Distance from light/mm | Colorimeter reading/arbitrary units | | Algal balls solution | Hydrogen carbonate solution | | 1 | 2 | mean | 1 | 2 | mean | 0 | 0.52 | 0.52 | 0.52 | 0.50 | 0.50 | 0.50 | 250 | 0.52 | 0.45 | 0.49 | 0.59 | 0.63 | 0.61 | 500 | 0.50 | 0.49 | 0.50 | 0.52 | 0.55 | 0.54 | 750 | 0.47 | 0.55 | 0.51 | 0.54 | 0.53 | 0.54 | 1000 | 0.58 | 0.56 | 0.57 | 0.52 | 0.54 | 0.53 | Results Results The results do not show the general relationship between light intensity and
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3/4/14 Determining The Formula of a Complex Ion Luqman Khan Contents: Aim………………………………………………………………………………………………………………….……2 Results……………………………………………………………………………………….………………………2-6 - Raw Data………………………….………….……………………………………………………..…..2 - Qualitative Analysis………………………………………………………………………………….2 - Data Processing……………………………..……………………………………………………..3-5 - Graphical Results……………………………..…………………………………………….…….5-6 Conclusion…………………………………………………………………………………………………………6-7 Evaluation……………………………………………………………………………………………………………
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An Experiment to Test the Effect of Temperature on the Rate of Photosynthesis in Green Algae Background Photosynthesis is an amazing process where plants are able to create their own food as well as oxygen using sunlight‚ carbon dioxide (co2)‚ and water. The part of the plant responsible for photosynthesis is the enzymes in the chlorophyll (structures that carry out photosynthesis located in leaves). Photosynthesis is the process of creating glucose. Water + Carbon Dioxide + Sunlight = Glucose
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