"Hydrochloric Acid" Essays and Research Papers

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Synthesis of Methyl Orange

orange by coupling diazotised sulphanilic acid with N,N-dimethylaniline. Materials (Chemicals) Sulfanilic acid, 2.5% aqueous sodium carbonate solution, sodium nitrite, concentrated hydrochloric acid, N,N-dimethylaniline, glacial acetic acid, 10% aqueous sodium hydroxide, saturated sodium chloride solution Apparatus 50 mL Erlemeyer flask, 250 mL beaker, test tube, hot plate, Buchner funnels Procedure In a 50 mL Elermenyer flask 1.2 g of sulfanilic acid and 12.5 mL of 2.5% aqueous sodium carbonate...

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Back Titration

experiment is to use the back titration method to determine the percentage of calcium carbonate in toothpaste. Instead of using standard titration methods where an acid is titrated directly using a standard solution of a base, back titration is used because the sample to be analysed, CaCO3 does not dissolve in water. Hydrochloric acid and sodium hydroxide are the reagents used in this experiment. The precise measured amount of HCl is added to the weighted portion of toothpaste which is CaCO3. When...

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The Reaction of Iron Nails with a Copper Solution

* Step H: 1) Pour 25 mL of the 1 M hydrochloric acid into the beaker and rinse the solid by swirling the acid around in the bottom of the beaker. Caution – Hydrochloric acid is corrosive to eyes, skin and clothes. Wearing a lab apron, rubber gloves, goggles, and a face shield is essential. Rinse any spills on skin or clothing with plenty of cold water. Clean up spills immediately – ask your instructor for help. 2) Decant the hydrochloric acid from the solid and then again rinse with...

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Objective: To determine relative molecular mass of a soluble base, X2CO3 by carrying out an acid-base titration with the following reaction , knowing the amount of hydrochloric acid used and the amount of substance Z used. Hypothesis: The X in substance Z is a group 1 element because substance Z is a soluble metal carbonate and would most likely be sodium or potassium because these elements are commonly used. Materials 100 cm3 beaker, 250 cm3 beaker, 250 cm3 volumetric flask with stopper...

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Titration of Calcium HydroxideG

Calcium Hydroxide Titrated with Hydrochloric Acid By: Juliana Kadiasi Signature__________________________________________ (Experimental team: Ashley Tsao, Sophie Alvarez, Catherine Hering) IB Chemistry HL B3 For: Mr. Ahmed. Belmir 15 September 2014 Criteria Aspect IA IA Total Design 1. Identified Problem & relevant variables 2. Procedure controls variables 3. Procedure & relevant sufficient data Data Collection & Processing 1. Precise & accurate...

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Sn1 reaction

most common type of organic reactions. SN1 reactions can be used to make a wide variety of new compounds. In this experiment, t-amyl alcohol will be converted by a SN1 mechanism to 2-chloro-2-methylbutane. Safety Precautions Concentrated Hydrochloric Acid is 12M. It will cause visible destruction of tissue upon contact. Wear eye goggles at all times during this experiment. Keep HCl away from skin, clothes, eyes. Neutralize any spilled HCl with sodium bicarbonate (baking soda) and wipe up immediately...

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Conservation of mass lab

exactly the same proportion of elements by mass. For example, if oxygen makes up 8/9 of the mass of pure water, then hydrogen must make up the remaining 1/9 of the mass (2). We used two main substances in this lab, zinc (Zn) and hydrochloric acid (HCI). Hydrochloric acid is a clear, colorless, highly pungent compound which is composed of a hydrogen atom and a chorine atom. It is highly corrosive and is known to break down many metals including aluminum, zinc, calcium, magnesium, and iron to generate...

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Thermochemistry: Solid Sodium Hydroxide

solid sodium hydroxide in water.                         NaOH(s) ---> Na+(aq) + OH-(aq) + heat Reaction 2: The reaction of solid sodium hydroxide with dilute hydrochloric acid.                  NaOH(s) + H+(aq) + Cl-(aq) ---> Na+(aq) + Cl-(aq) + H2O Reaction 3: The reaction of sodium hydroxide solution with dilute hydrochloric acid solution.       Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) ---> Na+(aq) + Cl-(aq) + H2O   Objectives: To measure and compare the amount of heat involved in three...

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CONCENTRATED HYDROCHLORIC ACID ALCOHOL OBSERVATIONS Secondary butyl alcohol Tertiary butyl alcohol Q3. Classify the alcohols used in this experiment as primary, secondary or tertiary. Q4. Use your answer to question 1 and the results in Table 2 to explain how mixing an alcohol of unknown structure with Lucas. Reagent can help one to determine whether it is primary, secondary or tertiary. Q5. Write down an equation for the reaction of tertiary butyl alcohol with concentrated hydrochloric acid...

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The Element: Chlorine

hospital sanitation has made community living possible. Chlorine is used in bleaching as said before. The bleaching action of chlorine in aqueous solution is due to the formation of hypochlorous acid, a powerful oxidizing agent. If a colored, oxidizable material is present, hypochlorous acid releases its oxygen to oxidize the material to a colorless compound. Liquid bleach is usually an aqueous solution of sodium hypochlorite, and dry powder bleaches contain chloride of lime. Since chlorine...

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