• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Factors Affecting Reaction Rates

Extracts from this document...

Introduction

Factors Affecting Reaction Rate Aim: To determine the factors which affect the reaction rate in a chemical substance. Theory: The rate of a chemical reaction can be defined as the increase in the concentration of one of the products per unit time or as the decrease in the concentration of one of the reactants per unit time. Rates of reaction usually decrease with time as the reactants are used up. Hypothesis: It is assumed that the rate of reaction will vary in different concentrations, temperature and different in various surfaces. Equipments: Test Tubes Graduated Cylinder Different pieces of zinc (pieces granulated and powder) ...read more.

Middle

Results and Conclusion: i) In the first one we observe that the reaction increases as the concentration increases. In the first tube with 0.1M almost nothing happens. In the second one with 1M we observe slight changes and small bubbles. The one with 6M of HCL is the one which reacted most vigorously. We could observe a lot of bubbling from the bottom of the tube and it dissociated pretty easily and quickly. This is because, the more concentrated the reactants the more collisions there will be per second per unit volume. So the rate of reaction increases as the concentration is increased. ii) ...read more.

Conclusion

C shows the difference of rate in different temperature. As the temperature increases the particles will move faster so there will be more collisions per second. Here where the zinc is put in the warm water the reaction happens more quickly. However, the main reason why an increase in temperature increases the rate is that more of the colliding particles will possess the necessary activation energy resulting in more successful collision. We can conclude that when the concentration, temperature and surface area is increased the reaction rate increases. In each of these tests we can also observe that as the reaction takes place in a larger concentration and surface area they get warmer as well. This proves that an exothermic reaction place here. Thus we see that concentration, surface area and temperature are factors which affect the rate of reaction. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Chemistry essays

  1. Investigate the rate of reaction of luminol in various factors. The objective was to ...

    70% 80% 90% 100% Luminol 0.5cm3 1cm3 1.5cm3 2cm3 2.5cm3 3cm3 3.5cm3 4cm3 4.5cm3 5cm3 Water 4.5cm3 4cm3 3.5cm3 3cm3 2.5cm3 2cm3 1.5cm3 1cm3 0.5cm3 0cm3 Time (sec) C. Investigation: rate of reaction in different temperature 1. Put 5cm3 of each of the 100% luminol and 0.15M H2O2 solution to 2 test tubes.

  2. Surface area vs Rate of Reaction

    not stopped for the chips after 180s as the graph still has an upward slope, suggesting that not all reactants have been use, and the setup still has more potential for more chemical reaction. Therefore, we can deduce that the reaction for the CaCO3 chips last longer than the powder.

  1. Factors Affecting Reaction Rate

    The particles must also collide with the proper molecular orientation of the reactants to allow formation of any new bonds necessary to produce products (Zumdahl, 2007). The purpose of conducting this lab to is to examine factors that influence the rate of a reaction to increase how often collisions occur or by making them more effective.

  2. Factors Affecting Rate of Reaction

    TEMPERATURE (�C) TIME (seconds) RATE OF REACTION (g/s) Alka-Seltzer Tablet 1.8 24 6 0.3 Crushed Alka-Seltzer 1.5 24 24 0.0625 DISCUSSION QUESTIONS This investigation turned out differently than what was hypothesized. The rate of reaction was decreased when the surface area was increased. The rate of reaction of the whole Alka-Seltzer tablet was 0.3 g/s, compared to the

  1. Factors affecting reaction speed

    As the concentration of the reactants increases the reaction speed will increase, since there are more molecules of the reactants in a particular volume, thus increasing the possibility of a collision and reaction. Variables: Independent variables: * Temperature * Concentration of reactants Dependent variables: * Reaction speed Controlled variables: *

  2. Reaction Rate

    * 1x Stopwatch * 2x Distilled Water Bottles * 12x 0.05g Magnesium Ribbons * 2500mL of water (H2O) * 30mL of each H2SO4 Solution (0.5M, 1M, 1.5M & 2M concentrations) Macintosh HD:Users:171321:Desktop:Screen Shot 2015-03-16 at 8.27.40 pm.png Setup & Plan: Independent Variable Control Variable Control Variable Control Variable Dependent Variable Concentration of H2SO4 solution (M)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work