Essays Tagged: "hydroxide ions"

Acids, Bases and pH Scales

solved in water and the resulting solution is an electrolyte. A base is any substance that produces hydroxide ions, when dissolved in water; they are also called alkali. This theory was able to explai ... and bases neutralize acids.-Acids release a hydrogen ion into aqueous solution and bases release a hydroxide ion.-The hydrogen ion of the acid and the hydroxide ion of the base unite to form water.-A ...

(2 pages) 56 0 4.2 Sep/2004

Subjects: Science Essays > Chemistry

Acid Rain. This is a research paper I did for my science fair project.

g in the US has a pH of about 4.3. The term pH means a measure of the concentration of hydrogen and hydroxide ions. The pH of a solution measures how acidic it is. pH values range from zero to fourtee ...

(3 pages) 54 0 5.0 Jan/2005

Subjects: Science Essays > Biology

Investigation into temperature change during neutralisation.

wing is an experiment into temperature change in an exothermic reaction taking place between Sodium hydroxide (NaOH) and Hydrochloric acid (HCl) and also how the concentration of the acid will vary th ... decreases.The acid and alkali compounds dissolve into water, acid into hydrogen ions, and alkali in hydroxide ions. Neutralisation with hydrogen and a hydroxide, at the end, the product is water (also ...

(3 pages) 18 1 3.0 Sep/2005

Subjects: Science Essays > Chemistry

Chemistry Project: Acids and Bases & the pH Scale

with hydrogen ions (H+). Hydronium ions are positively chargedbecause of their extra hydrogen ion. Hydroxide ions (OH-) are produced when watermolecules (H2O) ionize to become hydronium ions (H3O+) a ... ze to become hydronium ions (H3O+) and hydroxide ions (OH-).Substances with a high concentration of hydroxide ions are bases. Bases have a pH ratingof seven or higher. Solutions of ions conduct an ele ...

(6 pages) 67 1 2.3 Mar/2006

Subjects: Science Essays > Chemistry

Natural and Common pH indicators experiment

solution is acidic or basic. When the indicator is added to the solution, they bind to hydrogen or hydroxide ions. The different electron configurations of the bound indicator cause the indicator's c ... , neutral and basic solutions.Part A: COMMON INDICATORSEquipment0.1 M solutions of sodium hydroxide and hydrochloric acid, distilled water, 3 test tubes, test-tube rack, 3 x 100mL beakers, l ...

(4 pages) 30 0 5.0 Feb/2007

Subjects: Science Essays > Chemistry

Sodium Hydroxide - Production

Task: Research and describe the production of a named chemical including safety precautions.Sodium Hydroxide: Sodium Hydroxide, a white solid with a melting point of 318°C, is otherwise known as ... point of 318°C, is otherwise known as caustic soda or lye. The major industrial uses of sodium hydroxide are in the manufacture of chemicals, pulp and paper, aluminium, soaps and detergents. Sodi ...

(2 pages) 19 0 5.0 Sep/2001

Subjects: Science Essays > Chemistry

The Relationship between Heat and Amount of Reaction

n (i.e. HCl) is mixed with a solution of a base (i.e. NaOH), hydrogen ions from the acid react with hydroxide ions from the base, thereby forming water. This reaction causes heat to be released, resul ... eriment, several reaction mixtures will be made, each containing various concentrations of acid and hydroxide solutions. As the volumes of the reaction mixtures are the same, the temperature changes a ...

(1 pages) 15 1 4.0 Oct/2007

Subjects: Science Essays > Chemistry

CHEMISTRY HSC MODULE 2 - THE ACIDIC ENVIRONMENT

lorite (NaOCl) is added to kill microbes. This then reacts with water to form hypochlorous acid and hydroxide ions.OCl⁻ + H2O HOCl + OH⁻Hydroxide ions raise the basicity of the water, thus ... Basic oxides dissolve in water to form alkaline solutionsE.g. MgO(s) + H2O(l) Mg(OH)2(s) (Magnesium hydroxide {basic})Also, react with acids to form Salt and waterE.g. MgO + 2HCl MgCl2 + H2OAMPHOTERIC ...

(16 pages) 35 1 5.0 Aug/2008

Subjects: Science Essays > Chemistry

EXPERIMENT: Effect of Dissolved Carbon Dioxide on the pH of water

Pure water has a pH of 7 which means there is an equilibrium of positive hydrogen ions and negative hydroxide ions. ((When the pH of water is below 6.5, the water is soft and corrosive. This type of w ... ) and the bicarbonate ion (HCO3). H2CO3 + H2O --> HCO3- + H3O+. The carbonic acid may neutralize hydroxide ions which increase pH, and bicarbonate ion can neutralize hydrogen ions which decrease th ...

(7 pages) 35 5 3.0 Aug/2008

Subjects: Science Essays > Biology

Batteries Name a few batteries in the market and describe their uses,durability, shelf life etc

bstances gain these electrons and react with one another, they produce manganese oxide and negative hydroxide ions. These negative hydroxide ions then combine with positive NH3 ions that from when NH4 ... onger shelf life than Leclanche cell. The alkaline battery has an alkaline electrolyte of potassium hydroxide. In an alkaline battery, the anode consist of zinc powder as this allows a larger surface ...

(6 pages) 16 0 1.0 Oct/2008

Subjects: Science Essays > Chemistry

Alkalinity

er. Alkalinity is a buffer, which means it can neutralize ions. Alkalinity neutralizes hydrogen and hydroxide ions specifically. The majority of alkalinity comes from calcium carbonate, which dissolve ... ate, which dissolves when water moves through soil or over rock. It also comes from bicarbonate and hydroxide ions. Hardness is also highly associated with alkalinity. This is because the bulk of alka ...

(2 pages) 1123 0 3.0 Jan/2009

Subjects: Science Essays > Chemistry