Rates of Reaction

Good Essays
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 it is made.

We can only find the rate of reaction by actually doing experiments.

During a reaction, we can only measure how much reactant is used up in a certain time. On the other hand, we might choose to measure how much product is formed in a certain time.

To find the speed or rate of reaction, you can divide the amount of marble chips ( in grams) by the time taken (in seconds). This would give you a reaction rate in grams per second.

What affects the Rate of Reaction ?

Surface Area – We find that small pieces of solids, especially powders, react faster than large pieces.

Concentration – As you increase the concentration of the reactant there are more particles in the same volume. Therefore there is a greater chance of reactant particles colliding and reacting with particles on the surface of the marble chips.

Temperature - When you heat something up the particles get more energy and move around faster. As they travel quicker, there are more collisions in a certain time. Therefore as we increase the temperature so does the rate of reaction.

Catalysts – A catalysts is a substance which speeds up a chemical reaction. At the end of the reaction, the catalyst is chemically unchanged.

Calcium Carbonate + Hydrochloric Acid Calcium Chloride + Water + Carbon Dioxide

For my main experiment I am going investigate concentration. This is because I think with the restriction of equipment at school it will be the easiest to do.

You May Also Find These Documents Helpful

  • Better Essays

    Rate of Reactions

    • 2099 Words
    • 9 Pages

    RATE OF REACTIONS. The reaction rate (rate of reaction) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place. For example, the oxidative rusting of iron under the atmosphere is a slow reaction that can take many years, but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second (right). Chemical kinetics is the part of physical chemistry that studies reaction rates. The concepts…

    • 2099 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    Rate of Reaction

    • 488 Words
    • 2 Pages

    hydrochloric acid (HCl) on the rate of reaction (mol dm-3 s-1) for the following chemical reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Research question: How does altering concentration (mol dm-3) of hydrochloric acid (HCl) affect the rate of reaction (g/s) for the following reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Background information: The reaction between calcium carbonate and hydrochloric acid is an example of a neutralization reaction between an acid and a base.…

    • 488 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Rate of Reaction

    • 10674 Words
    • 75 Pages

    Kinetics 6.1 Rates of reaction 6.2 Collision theory 6 16.1 Rate Expression (AHL) 16.2 Reaction mechanism (AHL) 16.3 Activation energy (AHL) 6.1 Rates of reaction 6.1.1 Define the term rate of reaction. 6.1.2 Describe suitable experimental procedures for measuring rates of reactions. 6.1.3 Analyse data from rate experiments. © IBO 2007 Figure 601 An explosion is a quick reaction D ifferent chemical reactions occur at different rates (i.e. speeds). Some…

    • 10674 Words
    • 75 Pages
    Powerful Essays
  • Good Essays

    Rates of Reaction

    • 937 Words
    • 4 Pages

    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…

    • 937 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    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…

    • 617 Words
    • 3 Pages
    Satisfactory Essays
  • Better Essays

    rates of reactions

    • 1292 Words
    • 4 Pages

    Once Upon a Time by Gabriel OkaraOnce upon a time, son,they used to laugh with their heartsand laugh with their eyes:but now they only laugh with their teeth,while their ice-block-cold eyessearch behind my shadow.There was a time indeedthey used to shake hands with their hearts:but that’s gone, son.Now they shake hands without heartswhile their left hands searchmy empty pockets.‘Feel at home!’ ‘Come again’:they say, and when I comeagain and feelat home, once, twice,there will be no thrice-for then…

    • 1292 Words
    • 4 Pages
    Better Essays
  • Good Essays

    Rate of reaction

    • 856 Words
    • 4 Pages

    9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal, is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water…

    • 856 Words
    • 4 Pages
    Good Essays
  • Better Essays

    concentration of the hydrochloric acid and the rate of a reaction. To find this out I will react different concentration of hydrochloric acid and magnesium, from there I will monitor the gas (hydrogen) produced and analyse the results. Prediction: I predict the higher the molarity of the hydrochloric acid the faster the rate of reaction therefore the quicker the gas will be produced in the specific time interval. Overview of the experiment: In this reaction two substances will be present in the…

    • 3965 Words
    • 14 Pages
    Better Essays
  • Good Essays

    The Rate of a Reaction The area of chemistry that deals with the rate or speed of chemical reactions is known a chemical kinetics. The word “kinetic” is derived from the Greek name kinitikos that means movement or motion. In the present context, the kinetic means the reaction rate or rate of a reaction that is defined as the change in concentration of a reactant or a product with time (M/s). Chemical reaction can be represented by the following general equation. Reactants Products It is very important…

    • 1102 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Factors Affecting Rates of Reaction Thanks to Michelle Craig Manitoba Curriculum Chemistry Grade 12; Kinetics, Topic 3-08 Objectives To design short experiments to investigate and explain qualitatively using collision theory the relationship between reaction rate and temperature, concentration, catalyst, and surface area. Apparatus and Materials Available 3 x 250 mL beakers magnesium ribbon (1 cm) 3 x test tubes magnesium powder test tube rack mossy zinc 10 mL graduated…

    • 1370 Words
    • 6 Pages
    Good Essays