Essays Tagged: "Sodium carbonate"

Evaluating an enthalpy change that can not be measured directly

Watson.Evaluating An Enthalpy Change That CannotBe Measured Directly.Introduction.We were told that sodium hydrogencarbonate decomposes on heating to give sodiumcarbonate, water and carbon dioxide as ... directly, but can be found using the enthalpychanges from two other reactions. These being that of sodium hydrogencarbonate andhydrochloric acid and also sodium carbonate and hydrochloric acid.We wer ...

(2 pages) 49 0 3.9 Jan/1996

Subjects: Science Essays > Chemistry

Chem Lab, do ions combine in definite ratios.

To observe, and create a table of the different ions.QUESTIONIf copper (II) sulfate when mixed with sodium carbonate at different quantities combine to form ions in definite ratios.HYPOTHESIS / PREDIC ... ine in definite ratios.EXPERIMENTAL DESIGNA technique is performed in which copper (II) sulfate and sodium carbonate are placed together in various test tubes, with various quantities of each chemical ...

(3 pages) 29 0 3.0 May/2003

Subjects: Science Essays > Chemistry

Chemistry of water treatment

tion. An effective and economic disinfectant is chlorine, which is utilized as a gas (Cl2), liquid (sodium hypochlorite), or solid (calcium hypochlorite) (Drinan, 92). Chlorine is also reacted with am ... ran, 5). Water is dechlorinated by using activated carbon, sulfur dioxide, or sulfite salts such as sodium sulfite and sodium bisulfite. The use of activated carbon, which is highly effective but cost ...

(8 pages) 72 1 3.7 Mar/2004

Subjects: Science Essays > Chemistry

Titration-finding the concentration of a solution of sulphuric acid

tration of the sulphuric acid in my experiment. I will do this by titrating the sulphuric acid with sodium carbonate.H2SO4 + Na2CO3 à Na2SO4 + H2O + CO2Acid + Alkali à Salt + Water + Car ... e; Na2SO4 + H2O + CO2Acid + Alkali à Salt + Water + Carbon dioxideRatio of sulphuric acid to sodium carbonate:H2SO4 : Na2CO31 : 1Concentration of sulphuric acid:H2SO4 is approximately 0.05 - 0. ...

(8 pages) 72 0 4.3 Apr/2004

Subjects: Science Essays > Chemistry

Chemistry 10 Notes on Naming Compounds and Types of Chemical Reactions.

= w/ WaterAnhydrous Compounds = w/o WaterExamplesLiOH*H2O = Lithium oxide monohydrateNa2CO3*10H2O = Sodium carbonate decahydrateCu(NO3)2*6H2O = Copper nitrate hexahydrateName compound, and then add th ... DoubleTwo things are swappedAB + XY -> AY + XBCaCl2 + Na2CO3 -> 2NaCl + CaCO3Barium nitrate + sodium sulphate - > Barium sulphate + Sodium nitrateBa(NO3)2 + Na2SO4 -> BaSO4 + 2NaNO3Neutral ...

(1 pages) 24 0 0.0 Sep/2004

Subjects: Science Essays > Chemistry

Analysis of the mass of acetylsalicylic acid (aspirin) in an Aspirin Tablet.

Procedure:Standardization of dilute sulphuric acid1. 1.32g of the sodium carbonate was weighted accurately in a beaker.2. 120cm3 of deionised water was added to the b ... was weighted accurately in a beaker.2. 120cm3 of deionised water was added to the beaker containing sodium carbonate.3. The mixture was stirred gently to let the sodium carbonate to dissolve.4. The so ... nical flask until the mark was made up by a wash bottle.8. The solution was shaked well.9. 25cm3 of sodium carbonate solution was pipetted out and ran into a conical flask.10. Two to three drops of me ...

(2 pages) 49 0 3.0 Jan/2006

Subjects: Science Essays > Chemistry

Useful Materials: Soda-lime-glass

ed silica glass.How the material is made:Glass is composed from four main compounds: Silica (SiO2), Sodium carbonate (Na2CO3), limestone (CaCO3), magnesium carbonate (MgCO3). Additives may be added to ...

(1 pages) 11 0 0.0 Mar/2006

Subjects: Science Essays > Chemistry

Qualitative analysis

)Copper(II) nitrate (0.1mol/L) Zinc sulfate (0.1mol/L)Barium chloride (0.1mol/L) 4 unknown solutionsSodium Carbonate (0.1mol/L)Procedure:1. 2 drops of CuSO4 was added with 2 drops of each of B ...

(1 pages) 47 0 4.0 May/2006

Subjects: Science Essays > Chemistry

Chemistry year 11 Syllabus Summary

ecomposed into simpler substances, for example into elements. Some common compounds are table salt (sodium chloride), sodium carbonate (washing soda).•In solids, particles are packed closely toge ... lved in small amounts of the elements oxygen and nitrogen and compounds such as carbon dioxide, and sodium, calcium and magnesium chlorides and sulfates. Sea water is a mixture of water and sodium chl ...

(57 pages) 86 0 4.1 Apr/2007

Subjects: Science Essays > Chemistry

Finding Out How Much Acid There Is In A Solution

ep method can be used to calculate the concentration of the alkali: Firstly, the number of moles of sodium anhydrous carbonate needs to be calculated using the following formula: Number of moles of co ... Mass of compound Relative Molecular mass of Compound Formula of sodium carbonate anhydrous = Na2CO3 Mass of compound used = 2.65g Relative Molecular Mass of Na2CO3 ...

(10 pages) 17 1 4.0 Sep/2001

Subjects: Science Essays > Chemistry

Essay & Research Project #2

an acid and carbonate react, it gives of carbon dioxide, which turns limewater cloudy. For example:Sodium Carbonate + Hydrochloric acid → Sodium Chloride + Water + Carbon DioxideNa2CO3 + 2 HCl & ... tion can be heated in order for the water to evaporate; salt crystals will then be seen. For exampleSodium Hydroxide + Hydrochloric Acid → Sodium Chloride + WaterNaOH + HCl → NaCl + H2O7. Ex ...

(4 pages) 12 0 0.0 Jun/2008

Subjects: Science Essays > Chemistry

C-peptide as a Means of Measuring Insulin

in samples obtained from 21 healthy volunteer, the stability of UCP with preservatives (boric acid, sodium azide and sodium carbonate) were compared as well as the reproducibility of urinary C-peptide ...

(3 pages) 1405 0 5.0 Nov/2009

Subjects: Science Essays

The yield from an acid-carbonate reaction

released the mass of the reaction flask decreases. If the initial amount of carbonate (in this case sodium carbonate(Na2C03)) is known, then using the reacting ratios from the balanced equation of the ... 2. Weigh the flask and it's contents. Record this weight.3. Accurately measure between 0.9-1.0 g of sodium carbonate onto a watch glass. Record this weight.4. Carefully transfer the contents of the wa ...

(6 pages) 4 0 0.0 Mar/2013

Subjects: Science Essays > Chemistry


ction was being made. The element sunkBeforeAfterNickel (II) NitrateDear Green tint+ sodium carbonate Foam Mint Green Bubble cloudy Separation white PrecipitationBarium NitrateDea ... ion white PrecipitationLead NitrateColorless+ potassium iodide Opaque Precipitate CloudySodium CarbonateClearAnalysis: Answer the following question:What evidence suggests that chemi ...

(5 pages) 2 0 0.0 Nov/2014

Subjects: Science Essays > Physics