Essays Tagged: "aq"

Chemistry rapport on deciding the amount of askorbinacid in c-vitamin pills.

yre-base reaktion i al almindelighed:H3O+ + OH- → 2H2OAscorbinsyre opløst i vand:C6H8O6(aq) + H2O(l) C6H7O6- (aq) + H3O+Syre-base reaktionen i dette forsøg:C6H8O6(aq) + OH-(aq) &rar ... C6H7O6- (aq) + H3O+Syre-base reaktionen i dette forsøg:C6H8O6(aq) + OH-(aq) → C6H7O6- (aq) + H2O(l)Eller med stofformler:C6H8O6(aq) + NaOH(aq) → C6H7O6Na (aq) + H2O(l)Kemikalier/Appa ...

(2 pages) 38 0 4.0 May/2002

Subjects: Science Essays > Chemistry

Rates of reaction

of the alkaline earth metals. The atomic number ofmagnesium is 12.Magnesium(s) + Hydrochloric acid(aq) = Magnesium Chloride(aq) +Hydrogen(g)Mg + 2HCl = MgCl2+ H2In the reaction when the magnesium hit ...

(11 pages) 130 0 3.8 Jan/1996

Subjects: Science Essays > Chemistry

Acid Rain

on is as follows:Sulfuric acid when it joins with hydrogen atoms in the air:SO3(g) + H2O(l) = H2SO4(aq)In the air, the nitrogen ion becomes nitric or nitrous acid:NO2(g) + H2O(l) = HNO3(aq) + HNO2(aq) ... akes and rivers, which in turn causes a drastic change in the pH. This can be a problem for all the aquatic ecosystems, such as amphibians, fish and insects. Many of these species lay their eggs in th ...

(7 pages) 61 1 5.0 Feb/2004

Subjects: Science Essays > Atmospheric Sciences

How would the rate of reaction of Bisodel tablet affected by temperature?

ate + Hydrochloric Acid Carbon Dioxide + Calcium Chloride + WaterBalanced EquationCaCO3 (s) + 2HCl (aq) CO2 (g ) + CaCl2 (aq ) + H2O (l )PredictionI reckon the rate of reaction will be faster as the t ...

(8 pages) 33 0 3.7 Feb/2004

Subjects: Science Essays > Chemistry

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

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 glass th ...

(1 pages) 24 0 2.5 Apr/2004

Subjects: Science Essays > Chemistry

Reaction (rate) between magnesium ribbon and hydrochloric acid

loric acid to create magnesium chloride and hydrogen. The balanced formula for this is:Mg(s) + 2HCL(aq) MgCl2(aq) + H2(g)Magnesium + hydrochloric acid Magnesium Chloride + HydrogenMagnesium will react ...

(9 pages) 37136 0 3.0 May/2004

Subjects: Science Essays > Chemistry

Rates of reactions coursework (GCSE)

ionThe Effect of concentration on the reaction between magnesium and hydrochloric acid.Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g)Aim:In this experiment I am going observe and record the reaction between magne ...

(2 pages) 31 0 2.3 Jul/2004

Subjects: Science Essays > Chemistry

Coursework - Osmosis

stigate what concentration of sucrose solution is isotonic to potato cell sap.Apparatus:0M sucrose (aq) (distilled water)2M sucrose (aq)PotatoChip cutterKnifeBoiling tubesMeasuring cylinder (25cm3)Ver ... ncentration that is isotonic to potato cells, which I figure is now between 0.3M and 0.35M sucrose (aq).If I had repeated each concentration about 3 times, I could average them and get a more reliable ...

(3 pages) 16 0 0.0 Nov/2004

Subjects: Social Science Essays

Determination of the vitamin C content of a commercial vitamin C tablet and compare the result with the value specified by the manufacturer.

oxidizing agent used mainly for the determination of strong reducing agents, ascorbic acid C6H8O6 (aq) can be rapidly and quantitatively oxidized by iodine in acidic condition as shown in the followi ... dly and quantitatively oxidized by iodine in acidic condition as shown in the following equation:I2(aq) + C6H8O6 (aq) → C6H6O6 (aq) + 2H+ (aq) + 2I- (aq)This method involves the direct titration ...

(10 pages) 39 0 0.0 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.

s and one test solid noting the results. Results found in data tables.Series C: One drop of .2M NH (aq) is added to five drops of each of the four test solutions and results are recorded. Next you add ... of the test solutions, mix contents and record results. Finally, you add five more drops of 6M NH (aq) to each solution, mix and record results. Results found in data tables.Series D: Five drops of 6 ...

(1 pages) 19 0 0.0 Apr/2005

Subjects: Science Essays

Investigation: How does the concentration affect the rate of a reaction?

ion between different concentrations of sodium thiosulphate solution with hydrochloric acid.Na2S2O3(aq) + HCL(aq) = S(s) = H2O(l) + SO2(g) + NaCl(s)(sodium thiosulphate + hydrochloric acid = sulphur + ...

(5 pages) 35 0 3.0 Jun/2005

Subjects: Science Essays > Chemistry

Rates Of Reaction

of reaction. In this case, the reaction between hydrochloric acid and sodium thiosulphate.Na2S2O3 (aq)+ 2HCl(aq) 2NaCl(aq)+S(s)+SO2(g)When hydrochloric acid is added to sodium thiosulphate, the chemi ...

(8 pages) 32 0 3.0 Jul/2005

Subjects: Science Essays > Chemistry

Oxidation - Reduction. Range the metals copper, lead, silver and zinc together with hydrogen to find the strongest reducing agent.

nt.Apparatus/requirements:Sandpaper, strips of; zinc, lead, silver and copper, solutions containing aqueous; Zn2+, Pb2+, Cu2+ and Ag+ ions (0.2 M), hydrochloric acid (5.0 M), emery paper, test-tubes.M ... drochloric acid.Results:The reaction formulas of the metals and the ions are as following:Zn(s)+2H+(aq)->Zn2+ + H2Zn(s)+Pb2+(aq)->Zn2+ +PbZn(s)+Cu2+(aq)->Zn2+ +CuZn(s)+2Ag+(aq)->Zn2+ +2AgP ...

(3 pages) 26 0 5.0 Sep/2005

Subjects: Science Essays > Chemistry

Rates of Reaction: GCSE Chemistry.

tion is completed in a short period of time.BACKGROUND INFORMATION:Magnesium(s) + Hydrochloric acid(aq) = Magnesium Chloride(aq) +Hydrogen(g)Mg + 2HCl = MgCl2 + H2In the reaction when the magnesium hi ...

(8 pages) 40 0 3.0 Oct/2005

Subjects: Science Essays > Chemistry

Experiment on the Decomposition of a Carbonate

de. Limewater is a sensitive test for CO2, forming a distinctive milky precipitate:CO2(g) + Ca(OH)2(aq) arrow CaCO3(s) + H2O(l)APPARUTUS:* fat Pyrex test tubes x 3* medium Pyrex test tubes x 2* holed ...

(2 pages) 17 0 0.0 Mar/2006

Subjects: Science Essays > Chemistry

Rates Of Reaction Investigation

loric acid to create Magnesium chloride and Hydrogen. The balanced formula for this is:Mg(s) + 2HCL(aq) = MgCl2(aq) + H2(g)Magnesium + Hydrochloric Acid => Magnesium Chloride + HydrogenMagnesium wi ...

(6 pages) 17 0 0.0 Nov/2006

Subjects: Science Essays > Chemistry

A comparison between the Enthalpy of formation of MgO acquired via a series of reactions and Hess's Law (will they be equivalent?)

. Thus, in this investigation, we will see how accurate and precise Hess's Law can be.MgO(s) + 2 H+(aq) ( Mg2+(aq) + H2O(l) ΔH°2 = ?Mg(s) + 2 H+(aq) ( Mg2+(aq) + H2(g) ΔH°3 = ?+ H2 ... ps ThermometerStyrofoam Cup w/Lid Weighing ScaleMgO powderMethod and ProcedurePart 1: MgO(s) + 2 H+(aq) ( Mg2+(aq) + H2O(l)Take the Styrofoam cup and put 100 ml of 3.0 M HCl in it.Weigh out about one ...

(2 pages) 2955 0 0.0 May/2007

Subjects: Science Essays > Chemistry

ELECTROCHEMISTRY

fferent plating process.- the electrode half-reactions are: Anode (oxidation): Ag(s) + 2CN-(aq) Ag(CN)2-(aq) + e- Cathode (reduction): Ag(CN)2-(aq) + e- Ag(s) + 2CN-(aq) The end result is the ... s) + C(s) Pb(l) + CO(g) PbO(s) + CO(g) Pb(l) + CO2(g) Anode (oxidation): Pb(s) Pb2+(aq) +2e- Cathode (reduction): Pb2+(aq) + 2e- Pb(s)

(1 pages) 532 0 0.0 Jul/2001

Subjects: Science Essays > Chemistry

Sodium Hydroxide - Production

mical Production: Chlorine and sodium Hydroxide are both manufactured by the electrolysis of brine (aqueous sodium chloride) Electrolysis 2 Na+(aq) + 2 Cl¯(aq) + 2 H2O (l)>>> Cl2 (g) + H ... chloride) Electrolysis 2 Na+(aq) + 2 Cl¯(aq) + 2 H2O (l)>>> Cl2 (g) + H2 (g) + 2 Na+(aq) + 2 OH¯(aq) During electrolysis, chlorine is formed at the anode, whilst hydrogen and hydro ...

(2 pages) 19 0 5.0 Sep/2001

Subjects: Science Essays > Chemistry

The Relationship between Heat and Amount of Reaction

reaction causes heat to be released, resulting in the temperature of the reaction mixture rising:H+(aq) + OH-(aq) H2O(l)In this experiment, several reaction mixtures will be made, each containing vari ... mol L-112221130.50.540.10.5520.560.525.0Results:Figure 5.1Results TableReaction MixtureAmount of H+(aq) (mol)Amount of OH-(aq) (mol)Amount of H2O formed (mol)Ti (ºC)Tf ( ºC)Temp. ChangeAvera ...

(1 pages) 15 1 4.0 Oct/2007

Subjects: Science Essays > Chemistry