H+ + ln- Color of the solution changes from blue to colorless Time taken = 36.1s Part 2 (c): Ammonium ion / ammonium equilibrium NH3 + H2O NH4+ + OH- Initial color of NH3 Colorless Color after adding phenolphthalein Purple color Color after adding NH4Cl Colorless Questions and Answers: 1) Write down the equilibrium constant expression for the following reaction: [Co(H2O)6]2+ (aq) + 4Cl- (aq) [CoCl4]2- (aq) + 6H2O (l)
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that refuses to sleep. You find the path you once tredded. A gate with greenery as a right-side bang fills your vision. Laying your back against it’s bars you try to absorb all the little details. Thorns stink into your back‚ the sky turns a dark purple‚ the sun less visible. You don’t feel it‚ you long to return home. Your eyelids droup as you yawn. Murmur goodbyes to the flowers and waves before you fall
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green | F | NaOCl and KI | First a soft yellow‚ and after add the starch it changes to a black liquid. | G | KI and Pb(NO3)2 | It changes to a strong yellow liquid which seems to be more heavy. | H | NaOH and phenolphthalein | It gets a strong purple color | I | HCI and phenolphthalein | The change of the liquid from no-color to white shows that´s an acid‚ if it gets combines with a base like the number h the color became strong. | J | NaOH and AgNO3 | It creates brown crystals and all the
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Ph Lab Report Bryon Kim 123013 B(2) Biology Background information/Research PH paper (litmus paper) determines how acidic or how basic a substance is. The paper changes color accordingly to color code on the pH scale. The pH scale starts from 0 to 14. The lower the number the more acidic it is. Zero is the most acidic‚ and 14 is the most basic while 7 is the neutral number for example water. Examples of an acid is lemon juice or multi purpose cleaner. Examples of a basic substance is shampoo or liquid soap
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MOMA The Modern Art Museum is truly a place of awe. Being that it was my first time attending such an extravaganza‚ I was first amazed by the hundreds of people that were there of all ages and ethnicities. Then I was even more struck at how everyone was filled with a distinct love and passion for the arts‚ as smiles and camera flashes illuminated every floor at Moma. Aside from these truths‚ all of the different paintings‚ drawings‚ photographs‚ and their creative nature was also in itself truly
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household chemical. When finished with this experiment rinse the pipet well and return it to the Auxiliary Bag for use in future experiments. Name the items tested and record their results. What do these results mean? -Bleach+ Detergent= turns purple color -Glass Cleaner( Clear Image)+ bromothymol blue=bubbled and turned into dark blue color. -70% alcohol+ bromothymol blue=bubbled and turned into green color. From these results‚ we could conclude that class cleaner(Clear
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Lorraine Chen Chem 106 Lab South Street Seaweed Seaport Warm up: 1. Coffee Beans are crushed into small pieces‚ water is added to it and the mixture is heated over a flame. What do you think would happen to the coffee beans as it interacts with the water? Explain your prediction I think the heating of the water and coffee beans would cause the water to turn a light brown color because this process is most likely removing some kind of excess substance from the surface of the coffee beans. This
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Since 1997‚ during the annual June to October period‚ South East Asia would be shrouded in a blanket of haze and smoke‚ Singapore is no exception. The haze is a recurring annual problem in South East Asia caused by forest fires raging in Indonesia due to the local farmers’ “Slash and Burn” method of clearing land for agricultural purposes. Just last month‚ the haze in Singapore worsened to unprecedented levels‚ with the 3-hourly Pollutant Standards Index (PSI) hitting a record 401 on June 21‚ far
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Haze Open burning on a large scale causes the haze. The burning can be because of natural forest fires or irresponsible men burning a vast area for cultivation. When either one of these takes place‚ the smoke from the fires rises and spreads to the surrounding areas. It can even travel as far as the neighbouring countries. For example‚ when there was extensive open burning in Indonesia‚ the haze spread to Malaysia and Singapore. In these countries‚ the situation is further aggravated by the pollution
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LE CHATELIER’S PRINCIPLE Castro‚ Lharize C. Experiment # 1 I. Introduction: In this experiment‚ using Le Chatelier’s principle‚ we will observe several responses of a system at equilibrium to various changes in external conditions. The experiment aims to investigate two equilibrium systems: (a) cobalt complexes and (b) chromate-dichromate equilibrium and explain observations in light of the Le Chatelier’s principle. II. Theory/Concepts: In 1884 the French chemist and engineer Henry-Louis
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