Essays Tagged: "HCL"

Identifying bond type with physical properties

be racktest tube holderconductivity apparatusDI waterstir rodsscapulaswell plateBunsen burnerdilute HClBeakerplastic wash bottlemarking pen7 unknown substanceconductivity meterProcedure: Step #1) Mark ... the substance has, then go do one of the last two tests: Conductivity of solid or Action of dilute HCl. They are both a process to find if the substance is a metal or not.---------------------------- ...

(4 pages) 54 1 4.1 Mar/2004

Subjects: Science Essays > Chemistry

Investigating the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid

lampsBlack paper tubeLight probe and Blue boxDataloggerLampTotal of 30cm3 H 0, 50cm3 Na S O , 12cm3 HClMethod : We wanted to change the concentration of Sodium Thiosulphate and Hydrochloric Acid, but ...

(5 pages) 57 0 3.7 Apr/2004

Subjects: Science Essays

Neutralise Excess Stomach Acid

will be the one which has the lowest cost to successfully neutralise the dilute hydrochloric acid (HCl) (0.5 mol) (to represent the excess acid found in our stomachs). This powder would have be the o ... Seltzer has aspirin, which could be a stomach irritant. This reaction should take place:NaHCO3 + HCl NaCl + H2O + CO2Calcium Carbonate:Calcium carbonate is a fast acting cure. The compound is ...

(13 pages) 42 1 3.7 Apr/2004

Subjects: Science Essays > Chemistry

How to balance a chemical equation, shown in an experiment, by Mathias Zollbrecht

iment, that we can see how the chemical equation is balanced.3. IntroductionWe mixed Na(2)CO(3) and HCl together. The reaction began and the product CO(2) came out as a gas. The residue was NaCl + H(2 ... as. The residue was NaCl + H(2)O.4. ProcedureWe put Na(2)CO(3) on the one side of the glass and the HCl(aq) on the other side. Then we took the funnel and stuck it in a rubber and put both in the glas ...

(1 pages) 24 0 2.5 Apr/2004

Subjects: Science Essays > Chemistry

How is hydrogen chloride produced in industry and lab, its uses and preacautions to its hazards

ical properties of hydrogen chloride:Description Colorless gas or colorless liquidMolecular formula HClMolecular weight 36.46Density 1.49 g/L @ 25° CBoiling point -84.9° C (HCl gas)Melting poi ... t 36.46Density 1.49 g/L @ 25° CBoiling point -84.9° C (HCl gas)Melting point -114.8° C (HCl gas)Solubility Soluble in water, alcohol, benzene, ether; insoluble in hydrocarbonsConversion fa ...

(3 pages) 29 0 5.0 Oct/2004

Subjects: Science Essays > Chemistry

Pilot test

ion of this coursework.I will change concentration to start with. I will start by using 2 molars of HCL and 0.15 molar of NaS2O3I will do two tests.1. 2m HCL 10cm30.15m NaSa 20 cm32. 1m HCL (5 cm 3 2 ... ests.1. 2m HCL 10cm30.15m NaSa 20 cm32. 1m HCL (5 cm 3 2 m + 5cm33 water0.15m NaS2O3 20cm3Amount of HCL(cm3) Amount ofNaS2O3(cm3) Time(Sec) Amount of Water H20(cm3)10 cm3 20 cm3 32:34 sec 0 cm35 cm3 2 ...

(1 pages) 15 0 1.0 Nov/2004

Subjects: Social Science Essays

Reaction between HCl and Marble Chips

hrough itApparatus: Electrodes,Beaker,Lab PackMeasuring CylindersWiresMaterials: Hydrochloric acid (HCl),WaterDiagram:Prediction: I believe that as the concentration increases, so does the amount of c ... is electrolysed is called the electrolyte.Examples:Hydrochloric Acid hydrogen gas and chlorine gas2HCl(L) H2 + Cl2At the cathode:2H+ + 2e- H2At the anode:The electrolysis of solutionsIf a salt is dis ...

(3 pages) 59 4 3.3 Jan/2005

Subjects: Science Essays > Chemistry

Chemical Formulas and Chemical Equations: Purpose: To study different types of chemical equations and to conclude if a reaction occurs when two compounds are combined.

noting if precipitates are formed. Results found in data tables.Series B: Tow drops of reagent, 2M HCl, is added to each of the three test solutions and one test solid noting the results. Results fou ... ) to each solution, mix and record results. Results found in data tables.Series D: Five drops of 6M HCl is added to each of the four solid metals.Results found in data tables.Series E: Add six drops o ...

(1 pages) 19 0 0.0 Apr/2005

Subjects: Science Essays

Qualitative Analysis of Buffer Solutions

ate, iron (III) nitrate, and lead (II) nitrate were all put into test tubes, and labeled. Next, the HCl was added and mixed thoroughly, and observations were recorded. Next new cations were put into n ... pitates were all washed to remove all of the ammonium carbonate. The precipitates were treated with HCl, and observations were recorded.Dividing the Cations into General Classes- Using the results obt ...

(6 pages) 48 0 4.4 May/2005

Subjects: Science Essays > Chemistry

Investigation into temperature change during neutralisation.

hange in an exothermic reaction taking place between Sodium hydroxide (NaOH) and Hydrochloric acid (HCl) and also how the concentration of the acid will vary these results. The characteristics of the ...

(3 pages) 18 1 3.0 Sep/2005

Subjects: Science Essays > Chemistry

Lab Report for Group I Cations

proper molarities of the necessary acids were prepared. The molarities of these acids include: 6 M HCl, 6 M HNO3, 6 M NH4OH, and 6 M H2SO4. To make 30 mL of 6 M HCL, 14.8 mL of the acid was added to ... II cations in solution is adjusted to a pH of approximately 0.5 by the dropwise addition of dilute HCl, which also prevents possible hydrolysis of the ions (Jeschofnig, Qualitative Analysis). For the ...

(3 pages) 56 0 3.3 Apr/2006

Subjects: Science Essays > Chemistry

Experiment Prac Writeup. for reactions between metals and oxygen, water, dilute water and dilute alkali.

h of calcium, copper, iron, magnesium, zinc and aluminium* 35mL dilute (1 mol/L) hydrochloric acid (HCl)* 10ml conc (8 mol/L) hydrochloric acid (HCl)* 35ml dilute (1 mol/L) Sodium Hydroxide (NaOH)* 10 ... n the other. When testing with diluted acid only one chemical reaction was seen:1. Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g) (neutral species) Mg(s) + 2H+ (aq) + 2Cl-(aq) Mg+2 + 2Cl- + H2(g) ( ...

(5 pages) 20 0 3.0 Aug/2006

Subjects: Science Essays > Chemistry

Monitoring Rates -HCl and Mg

a reaction as it proceeds.Background: You will use the reaction between magnesium ribbon and dilute HCl to make hydrogen gas. You will need to keep certain things constant and you will need to make su ... ta will need to be recorded in a suitable manner and analysed and presented in a suitable way.Mg + 2HCl à H2 + MgCl2Assessment: Planning (a) - partially (Hypothesis and Variables)Planning (b)Da ...

(7 pages) 38 0 4.8 Aug/2006

Subjects: Science Essays > Chemistry

The Chemistry of Copper: AP Chemistry Lab Report

contents to settle.10.Decant liquid from solid.11.Wash solid with water and decant again.12.Add 4M HCl until solid disappears, then add 1-2 ml excess.13.Add 1g of aluminum to flask.Data/Observations1 ... dark crystalline solid can be seen on the bottom, and a clear, colorless solution is on top.7.When HCl is added, a bluish/green solution forms.8.When solid Al is added, bubbles form and the intensity ...

(2 pages) 38 0 4.3 Oct/2006

Subjects: Science Essays > Chemistry

Collision Rate investigation

of Calcium- 12 Test Tubes- 120ml of 0.25M, 0.50M, 1.0M, 2.0M and a 3.0m each of Hydrochloric acid (HCl).- Measuring Cylinder- Safety Goggles- Stop Clock- Scissors- RulerMetals and Time each took to S ... cm by 2cm wide and height each.5. Clean them with a tissue6. Label the test tubes with 10ml of 1.0m HCl7. Put on Safety goggles8. Fill the test tubes with 10ml of 1.0M Hydrochloric Acid9. Place the ma ...

(6 pages) 15 0 3.7 Nov/2006

Subjects: Science Essays > Chemistry

Rate of reaction between Hydrochloric acid and magnesium

Aim:The aim of my experiment is to find out the rate of reaction between Hydrochloric acid (HCL) and Magnesium (Mg) in different temperatures. The products that will be formed are Magnesium Ch ...

(3 pages) 14 0 3.0 Nov/2006

Subjects: Science Essays > Physics

Analytical and Physical Chemistry: Gravimetric Analysis

the preparation of BaSO4 by reacting BaCl with Na2SO4 which was slightly acidified by concentrated HCl. Next was the washing and filtering of BaSO4 precipitate using vacuum filtration. Upon drying an ... solution of barium chloride to a hot solution of the sulphate slightly acidified with concentrated HCl.BaCl2 (aq) + Na2SO4 (aq) --> BaSO4 (s) + 2 NaCl (aq)Ba2+ (aq) + SO42- (aq) --> BaSO4 (s)In ...

(9 pages) 27 0 3.0 May/2007

Subjects: Science Essays > Chemistry

Hess's Law

at was accomplished with less substance for safety reasons. 5 grams of NaOH was mixed with 41 ml of HCL. With this reaction, the H can be found by using the equation q=mc T. It was found that q=70759. ...

(1 pages) 1590 0 0.0 Apr/2001

Subjects: Science Essays > Chemistry


Titration Lab Abstract.The molarity of HCl was determined by titrating the acid, HCl, with a standard base solution, NaOH. It was determine ... l, with a standard base solution, NaOH. It was determined that there was a 1.356 M concentration of HCl, with a very minimal percentage of error of 3.14%.Introduction.In order to determine the concent ... a solution, a neutralization reaction will need to be preformed. In this case the concentration of HCl needs to be determined. This is done by completing a titration of HCl with a NaOH solution. A so ...

(2 pages) 51 1 3.7 Nov/2001

Subjects: Science Essays > Chemistry


a product and the amount predicted by the theoretical calculation of a balanced equation: Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g) PROCEDURE First we obtained a strip of pre-cut magnesium ribbon, ... we gently propped the end of the tube up under the inverted graduated cylinder and then poured 10ml HCl into it. As the magnesium began to react, we slowly pulled the tube out and waited as the gas bu ...

(4 pages) 9 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry