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

With high concentrations the rate of reaction will be fast. This is because according to the collision theory the more you increase the concentration of a substance then the rate of collision increases.

Extracts from this document...

Introduction

Scientific knowledge With high concentrations the rate of reaction will be fast. This is because according to the collision theory the more you increase the concentration of a substance then the rate of collision increases. If the solution is made more concentrated it means there are more particles of the reactant colliding with the water particles. Hence the collision between the sodium thiosulphate and the Hydrochloric acid particles becomes more likely. If a low concentration of sodium thiosulphate were used then there would be less collision. ...read more.

Middle

Therefore the cross will disappear quickly. The cross will disappear quickly because when the concentration is increased the numbers particles are also increased causing more precipitate to form in a smaller length of time. I have simplified my explanation in the diagram below to show the effect of concentration on particle activity. As you can see the higher the concentration the more the particles are present and hence the more collision will take place in less time causing more precipitate to form in a short length of time. ...read more.

Conclusion

Hence, more collision takes place. There are more particles to react with so the reaction becomes faster. When the reaction becomes faster the time taken for the sulphur precipitation to be formed becomes quicker. Therefore the cross disappears quickly. The rate of reaction increases because there are more particles that collide more often. This causes the rate of the reaction to increase. This is simplified in the diagram below. With low concentrations there are less particles and less collision therefore the rate of the reaction is slow. With high concentrations there are more particles and more collision. Therefore the rate of the reaction is fast. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour 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 GCSE Patterns of Behaviour essays

  1. chemistry rate of reaction

    4) Temperature - This is the factor that we will be investigating and is the main factor in regards to the rate of reaction and it has the biggest effect. When we increase the temperature at which a reaction is taking place, the particles move quicker. This has two effects: 1)

  2. Investigating the rate of a reaction

    6) Then place a piece of calcium carbonate of small size on to the digital scales. Using a scalpel cut of excess amounts to make the total weight of the chip 2 grams and make all chips roughly the same size, measuring with a ruler.

  1. All of these factors will change the rate of reaction because of the Collision ...

    � Type of acid used If you changed the type of acid then the rate of reaction would change. Hydrochloric, Sulphuric and Nitric acid all would produce a different rate of reaction, so if I do change the type of acid then all three kinds would produce a different set of results.

  2. Catalase activity in the liver

    Find a clear bench and take the pestle and mortar. 2) Grind up the 4g of liver with the pestle and mortar. 3) Measure 200ml of water with the measuring beaker and mix the ground liver. 4) Once it is thoroughly mixed you will have to filter the solution.

  1. Effect Of Substrate Concentration On The Activity Of Catalase

    The only anomalies are the results at 8% and 10%. The result at 8% is slightly above the line of best fit and the 10% result is slightly below it. This is probably due to an experimental error involving one of the factors mentioned above.

  2. The rate of a reaction increases with concentration.

    + Mg(s) MgCl2(aq) + H2(g) Key Variables and Fair Testing There are three other key variables that can affect the rate of a reaction. These are: * Temperature - an increase in temperature will lead to an increase in particle movement, therefore increasing the number of collisions.

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