Experiment 12 Experiment No. 12 Aim- To study the effects of temperature on the enzymatic activity of salivary amylase on substrates starch. Materials required- Test tubes‚ beakers‚ pipettes‚ funnels‚ thermometer‚ cotton‚ starch‚ iodine‚ potassium iodide‚ sodium chloride‚ thermocol box‚ buffer solution of pH 6.8 & match box. Principle- Salivary amylase is an amylolytic enzyme found in saliva released from salivary glands. All the enzymes show optimum enzymatic activity around 37° C which is our body
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success‚ it must reduce some economic‚ social and environmental damages‚ while being affordable for the region of use. An example of a strategy that modifies the event of a tropical storm is cloud seeding. While cloud seeding (using dry ice or silver iodide to trigger precipitation e.g. to maintain sunny conditions at the Beijing 2012 Olympics) has the potential to prevent any social‚ economic or environmental losses at all through the dissipation of a storm over a safe region‚ it has a number of drawbacks
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- NaHC03 A7. Cobalt nitrate with sodium hydroxide Co(N03)2 - 6 H20 – NaOH B6. Copper nitrate with sodium carbonate Cu(N03)2 - 3 H20 - Na2C03 C1. Iron nitrate with sodium phosphate Fe(N03)3 - 9 H20 - Na3P04 - 12 H20 C2. Iron nitrate with sodium iodide Fe(N03)3 - 9 H20 – Nal C6. Iron nitrate with sodium carbonate
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First‚ 2 mL of was reacted with approximately .5 g of KI in an Erlenmeyer flask to form and a hypoiodite species. The second step is the reaction between another molecule of and hypoiodite‚ which results in reformation of the catalyst‚ potassium iodide. The catalyst is used to speed up the reaction by decreasing the activation energy. In addition‚ the catalyst can regenerate itself to be used again till the reaction runs to completion. Overall‚ the reaction is (l). Oxygen gas will be collected
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How ever hard it seems always remain subsistent and take control of your day headstrong‚ and never worry about the millions of things you don’t have....live in the spectacular NOW.... People believe that trouble is far away but it is here to stay and cannot be redirected any way that you may wish Net ionic equations are equations that show only the soluble‚ strong electrolytes reacting (these are represented as ions) and omit the spectator ions‚ which go through the reaction unchanged. When
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What are the exceptions? Sodium chloride‚ sodium iodide‚ and sodium sulfates generally do not form precipitates. One exception in our results with all three of these was when they were each combined with Fe(NO3)3 (iron nitrate) in which all three yielded brown precipitates. E - Which cations generally
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Purpose: The purpose of this lab is to develop a deeper understanding of LeChatelier’s Principle by observing several systems at chemical equilibrium and interpreting the effects of varying concentrations and temperature. The principle states that if systems at equilibria are altered or disturbed in any form‚ the equilibria will shift to reduce the disturbing influence ( Catalyst‚ 186). In a 3 part experiment‚ we analyzed the outcome of changes in reactant and product concentrations‚ equilibrium
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Sulfide Ga3+ metal C4- Nonmetal Ga4C3 Gallium Carbide Ga3+ metal Bi3- Nonmetal Ga3Bi3 Gallium Biside Pb2+ Metal P3- Nonmetal Pb3P2 Lead phosphide Pb2+ Metal F1- Nonmetal PbF2 Lead Fluoride Pb2+ Metal I1- Nonmetal PbI2 Lead Iodide Pb2+ Metal N3- Nonmetal Pb3N2 Lead Nitride Pb2+ Metal C4- Nonmetal Pb4C2 Lead Carbide Ag+ Metal P3- Nonmetal Ag3P Silver Phosphide Al3+ Metal P3- Nonmetal Al3P3 Aluminum Phosphide B3+ Metalloid P3- Nonmetal B3P3 Boron
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Demo write up: #1 The plastic tablet that gets placed into the water causes the water to spin like a tornado. Then when dry ice is added the water starts to spin and create smoke‚ the color of the water goes from dark green to light green. There is probably a chemical in the dry ice that is reacting with the universal indicator which is causing the substance to change colors. Hydrochloric acid changes the color of the mixture and makes it green to yellow but when you add more hydrochloric acid
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any of the chemicals. some chemicals with safety hazards we will be working with are Sodium chloride with is slightly toxic if ingested. Sodium Bromide which is slightly toxic if inhaled or ingested may cause serious eye damage if in contact. Sodium Iodide may cause serious eye damage‚ corrosion or irritation causes skin irritation. Silver Nitrate may cause skin corrosion or irritation also may cause severe skin burns and eye damage‚ very flammable keep away from heat‚ sparks‚ open flames‚ and hot surfaces
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