"Reaction Rate" Essays and Research Papers

1 - 10 of 500

Reaction Rate

Rates of Reaction Coursework Aim: To find out how different concentrations of sodium thiosulphate (Na S2 O3) affects the speed of its reaction with Hydrochloric acid (HCL). Introduction When Sodium Thiosulphate and Hydrochloric acid react they produce a cloudy precipitate. Both of the chemicals are clear solutions and they react together to form a yellow precipitate of sulphur, the equation for this reaction is: Na2 S2 O3 + HCL, H2 O + NaCL + SO2 + S Sodium Thiosulphate + Hydrochloric...

Premium Reaction rate, Sodium chloride, Sodium 937  Words | 4  Pages

Open Document

Reaction Rate and Rate Law

volume). 3. [10 points] The following reaction is found to be first order in A: A −→ B + C If half of the starting quantity of A is used up after 56 seconds, calculate the fraction that will be used up after 6.0 minutes. 4. [15 points] The rate law for the decomposition of ozone to molecular oxygen 3 O3 (g) −→ 3 O2 (g) is rate = k [O3 ]2 . [O2 ] The mechanism for this process is k1 O3 O + O2 k−1 k 2 O + O3 −→ 2 O2 Derive a rate law from these elementary steps. Clearly...

Premium Arrhenius equation, Chemical reaction, Enzyme inhibitor 617  Words | 3  Pages

Open Document

Investigating the Rate of Reaction Between Marble Chips (Calcium Carbonate) and Hydrochloric Acid Aim.

Investigating the rate of reaction between Marble Chips (Calcium Carbonate) and hydrochloric acid Aim. In the investigation I am going to find out how the surface area affects the rate of reaction by measuring the amount of gas produced and weight loss in a reaction between small/large pieces of Marble Chips (Calcium Carbonate) and Hydrochloric acid per minute. Hypothesis. The rate of reaction increases when the surface area of a solid reactant is increased. This happens because by...

Premium Sodium bicarbonate, Oxygen, Chlorine 1112  Words | 5  Pages

Open Document

An investigation to compare the reaction rates between potato an hydrogen peroxide and liver and hydrogen peroxide

An investigation to compare the reaction rates between potato and hydrogen peroxide against liver and hydrogen peroxide through loss in mass. Background information: Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And enzyme is a biological catalyst. A catalyst is some thing that speeds up a reaction without being changed itself. Because of this enzymes and catalysts can be used again and again. Enzymes are protein chains that have a primary, secondary...

Premium Reaction rate, Oxygen, Liver 1974  Words | 6  Pages

Open Document

Rates of Reaction

Coursework – Rates of Reaction Research The rate of reaction tells us how quickly a chemical reaction takes place. It is important for people in industry to know how fast a reaction goes. They have to know exactly how much of their product they can make each hour, day or week. In a shampoo factory, the rate might be 100 bottles per minute. We can't work out the rate of a reaction from its chemical equation. Equations can only tells us how much product we can get. They don't say how quickly...

Premium Chemistry, Carbon dioxide, Rate equation 539  Words | 3  Pages

Open Document

Science Rates of Reaction

Reaction Rate Coursework Aim To see how the concentration of a reactant affects the rate of reaction, in this case sodium thiosulphate and acid. Scientific Background For a reaction to occur, the particles of the reactants must be colliding with each other with enough energy, the amount of energy needed for the reaction is called activation energy. Activation energy is altered by temperature, concentration, surface area of and the pressure on the reactants. Stirring the reactants also increases...

Premium Reaction rate, Reaction rate constant, Sodium 1060  Words | 5  Pages

Open Document

Rates of Reaction Lab Investigation

Chemestry Lab Rates of Reaction (Picture from: http://sciencespot.net/Pages/kdzchem.html) The rate of reaction is how fast or slow a reaction is completed. This is important for factories and chemists all over the world. What happenes during a reaction is atoms or molecules that collide and form new molecules. You can affect this rate of reaction with: temperature of reactants or suroundings, surface area of reactants, if there is a catalyst present, but in theis lab the concentration was changed...

Premium Chlorine, Reaction rate, Chemical kinetics 977  Words | 4  Pages

Open Document

Change the Rate of Reaction

Changing the Rate of Reaction PART 1: PARTICLE SIZE Question: How does changing the particle size of marble (CaCO3) affect the rate of reaction when it is added to hydrochloric acid (HCl)? Hypothesis: If I change the particle size of marble to test how to change the rate of a chemical reaction, than the chemical reaction with the smallest marble particles will produce CO2 the quickest because the larger the surface area, the more place the hydrochloric acid will have to collide with the marble...

Premium Chemical reaction, Reaction rate, Hydrogen chloride 1706  Words | 7  Pages

Open Document

The Effect of Concentration on Reaction Rate

Effect of Concentration on Reaction Rate Aim: To use a simple reaction between sodium thiosulphate and hydrochloric acid to discover concentration this determines how fast chemical reactions occur. Independent Variable: Concentration of hydrochloric acid (%) Dependent Variable: Time taken for chemical reaction to take place (sec) Hypothesis: My prediction is that the increased concentration of the thiosulfate will in turn lead to an increase in the rate of reaction. This is a well informed...

Premium Sodium, Reaction rate, Measurement 874  Words | 5  Pages

Open Document

An Investigation in to the Rate of Reaction

An investigation in to the rate of reaction Plan: I am going to investigate the rate of reaction. The reaction I will be using is: Calcium Carbonate + Hydrochloric acid ---- Calcium Chloride + water + carbon dioxide. CaCO3 + 2HCl ---- CaCl +H2O + CO2 Measurements and Variables: The variables I have chosen to change is strength of the hydrochloric acid which will be 1 mole, 0.7 mole, 0.5 mole, 0.3 mole and 0.1 mole some variable I will not be using are temperature, mass, density. The measurements...

Premium Calcium carbonate, Calcium, Chemical reaction 935  Words | 4  Pages

Open Document

Become a StudyMode Member

Sign Up - It's Free