Question Chemicals Reaction A NaHCO3 and HCI - C02 A bubble occurrence B HCI and BTB A deep yellow C NH3 and BTB A purple color D HCI and blue dye A deep blue E Blue dye and NaOCI A greenish color F NaOCI and KI A bright red G KI and Pb(NO3)2 A yellow H NaOH and phenolphthalein A light yellow I HCI and phenolphthalein A red color J NaOH and AgNO3 A black color K AgNO3 and NH3 No change L NH3 and CuSO4 A light whitish blue Observations:
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concentration levels. For this experiment we will also be using a catalyst to speed up the production of oxygen gas. The catalyst being used will be iodide ions‚ which will be introduced into the actual reaction through a mixture of potassium iodide‚ KI. Once all the reactions are complete the rate will be found by using the rate law‚ which shows the dependence of the rate of the reaction of both the iodine and the hydrogen peroxide. Procedure For this experiment we had to work in pairs.
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option. Te Reo Māori is one of the two official languages in New Zealand it’s also part of the school’s obligation to Te Tiriti o Waitangi. In Article two of Te Tiriti o Waitangi it states. “Ko te Kuini o Ingarani ka wakarite ka wakaae ki nga Rangatira ki nga hapū – ki nga tangata katoa o Nu Tirani te tino rangatiratanga o o ratou wenua o ratou kainga me o ratou taonga katoa.” (Busby‚ Wiremu 1840). The people and leaders of New Zealand have chieftainship of all lands‚ estate and treasures they own;
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| E1 | Blue dye and NaOCl | Solution remained Blue. When HCl is introduced‚ solution turned blue green | Blue-green solution | Blue-green solution | F1 | NaOCl and KI | Solution changed from clear to Green‚ with the addition of Starch‚ the solution turned Black | Black solution | Black solution | G1 | KI and PB(NO3)2 | Yellow precipitate formed | Yellow solution | Yellow solution | H1 | NaOH and Phenolphthalein | Solution changed from clear to Purple-red | Purple-red
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Making up Hydrogen Peroxide Volume required 250 cm3 and concentration required 0.1 moldm-3 Given concentration of H2O2 = 1.7 moldm¬-3 Number of moles (n¬¬¬¬¬¬¬¬¬¬¬) = Concentration (moldm-3) x Volume (dm-3) = 0.1 x 0.25 = 0.025 mol Volume (dm-3) = Number of Moles (n) X 1000 Concentration (moldm-3) = (0.025/1.7) x 1000 = 14.7 cm3 Distilled water required: 250 cm3 – 14.7
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solution by mixing 33.2 g KI in distilled water and dilute to 100 mL 3. Dishwashing liquid – approximately 5 mL 4. Food coloring 5. Graduated cylinders – 500 mL and 10 mL 6. Large serving tray and rubber gloves to assist in cleanup 7. Measure 20 mL of 30% hydrogen peroxide into the graduated cylinder. Add 5 mL dishwashing liquid and 10 drops food coloring to the graduated cylinder and shake to mix contents‚ but not too vigorously to avoid foaming. Measure 5 mL of 2 M KI solution in 10 mL graduated
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|turned dark green |very dark green. | |NaOCl + KI |B5 |Light yellow |Darker yellow. | |NaOCl + KI + Starch |B5 |Dark purple/black |Black | |KI + Pb(NO3)2 |C5 |Thick yellow |Thick
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“East London Opium Smokers” The document entitled “East London Opium Smokers” is a document written by an anonymous author‚ very possibly because he did not want to be identified. The excerpt is a story of a journey into England’s Bluegate Fields in search of the “Opium Master” to obtain opium‚ his specific drug of choice. He claims that this man will teach him his trade‚ something more special than receiving the drug from any chemist or other distributor. However‚ it is acceptable to say the
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Haryanavi is the dominant mother tongue of Haryana. Hindi is spoken as spoken as a second language. Haryana is called the Land of Rotis because this is the main food item in Haryana. Tea‚ Buttermilk (Lassi)‚ Thandai are the local drinks. Bajra ki roti‚ Bajra Ki Khichdi and Bathua Ka Raitha are also popular food items.Women love to wear colourful dresses. The men generally wear white dhoti or pajama‚ white-coloured kurta‚ ’Pagri’. All-white attire is a status symbol for men. Women wear ghaggra‚ lehenga
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Title: The history of Haiti Purpose: To understand how Haiti became what it is and all the trials it has endured Thesis: In order to explain Haiti’s history I will discuss its location‚ when and how it became independent and Haiti today and also its early history Intro: Attention Getter: Who here has heard of the horrible plight of Haiti? Haiti has been through constant suffering everyday due to economic difficulty‚ lack of food‚ lack of clean water‚ hurricanes‚ and possibly everything
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