make my standard solutions of each of my reactants: 15 Changing the concentration of potassium iodide: 18 Changing the concentration of potassium peroxodisulphate: 19 Changing the quantity of iron (III) sulphate: 20 Changing the temperature at which different runs are done at: 21 Changing the temperature of the reaction and using a catalyst: 21 Results: 22 Iron (III) sulphate: 22 Potassium iodide: 27 Potassium peroxodisulphate: 31 Temperature change: 35 Arrhenius equation: 37 Percentage error:
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obvious. Instead‚ back titration will be employed. The titration of a reducing agent with iodine to produce iodide ion is referred to as an iodometric titration. Iodine is generate by adding a weighed amount of standard potassium iodate (KIO3) to an excess of potassium iodide (KI) and then add adding strong dilute sulphuric acid (H2SO4) to produce iodine as shown below: (1) KIO3(aq) + 5KI(aq) + 3H2SO4(aq) → 3I2(aq) + 3H2O(l) + 3K2SO4(aq) The known excess of I2 generated by the reaction
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Banana (Musa acuminata) Peel Juice Drink Tonirose Garcia Charisse Mae Talandron Kylle Annriel Dungog Mary Minette Salundaguit Jaspier Villarubia Matt Allen Aliazon Bernadette Sacedon Joshua Ravanta Researchers Ms. Glesby Camangyan Adviser MARCH 2013 ACKNOWLEDGEMENT First and foremost‚ we would like to give our thanks and praises unto the Lord for giving us the life‚ enough knowledge and understanding enable us to complete this project‚ without him everything
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MOLE By Sir Shah Murtaza Q1. Potassium reacts with water as shown in the equation. a. Describe what you would see when potassium reacts with water. b. A sample of 0.195 g of potassium was added to 500 cm3 of cold water. When the reaction was finished‚ 100 cm3 of 0.100mol/dm3 hydrochloric acid was added to form solution X. (i) Calculate the number of moles of hydroxide ions formed when the potassium was added to water. (ii) Calculate the number of moles of
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cm) compared to HCl (dave HCl= 16.18 cm). Another experiment was performed with the use of petri dish containing an agar-water gel with three wells. One drop of each substance (potassium dichromate‚ potassium permanganate‚ and methylene blue) was placed on each respective well. In three-minute interval for 30 minutes‚ potassium permanganate‚ which has the lowest molecular weight (MW= 158 g/mol)‚ displayed the largest diameter (d= 17.5 mm) and diffused with the fastest rate (0.52 mm/min). On the other
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as a heritable disease of the muscle‚ which is caused by a genetic defect. Some humans have also been known to carry a rare disease very similar to this‚ called Eulenberg ’s disease. HYPP causes muscle weakness or paralysis and is related to high potassium levels in the bloodstream. According to the Swedish National Board of Health and Welfare‚ "the cause of hyperkalemic periodic paralysis [in humans] is a change in a gene that regulates the production of a protein in the sodium ion channel of
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sodium levels are low (normally 135-145 mg/dL). Her potassium is also low (should be anywhere from 3.5-5.0 mEq/L). Her bicarbonate is very high; it should only be in the range of 22-28 mEq/L. Her pH is also high (alkaline); it should be in the range of 7.38-7.42. (“Normal Lab Values”‚ n.d.). The amount of potassium found in the urine can vary widely depending on the diet of the patient (Lee‚ 2013). So it in unknown as to whether her urinary potassium levels are within the normal range. The creatinine
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flame when lit‚ making it easy to identify and relable against the other substances. * Potassium nitrate Also‚ potassium would give off a light purple color when lit‚ making it simple to identify against the other substances. * Ammonium chloride Ammonium‚ although not tested in this lab‚ would be easy to pick out since it most likely does not give off a pink or purple flame as lithium sulfate and potassium sulfate do‚ respectively. 3. Using the results of this lab‚ explain how one could
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some calcium and potassium to your diet. You can do this through supplements‚ but it is better to try and add some food items that accomplish this objective. Dark vegetables like spinach and kale are great to boost calcium‚ plus sesame seeds are high in calcium. Of course you can add a cup of milk per day‚ but some folks are lactose intolerant so that’s not always an option. A good old fashioned banana a day will not only boost your brain function‚ but add a fair amount of potassium to your diet. Sometimes
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Determination of Chloride in Urine in Different Circumstances Aim: To determine the chloride content by titrating mixtures of urine against potassium thiocyanate under in different circumstances. Research Question: How do different conditions of urine samples collected affect its concentration of chloride which is measured by titrating the mixture of urine with potassium thiocyanate until it turns red? Hypothesis: The greater the consumption of food‚ the higher the chloride concentration in urine
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