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

To investigate the effect of varying concentration on the reaction between Magnesium ribbons and Hydrochloric acid.

Extracts from this document...

Introduction

To investigate the effect of varying concentration on the reaction between Magnesium ribbons and Hydrochloric acid. Introduction The factors that I'm exploring will change the rate of reaction because of the Collision Theory. This is a theory that is used to help predict the rate of a reaction. The Collision Theory is based on the idea that for a chemical reaction to take place, it is necessary for the reacting particles to collide with each other with enough energy to break or form new bonds between the other particles i.e. swapping or sharing particles, which is called a successful collision. If when they collide and they do not have enough energy to break or form new bonds then they will simple bounce off each other, causing an unsuccessful collision where no reaction will take place. If you want to speed up a reaction, you need to get these particles to hit each other more frequently. If the solution is made more concentrated it means there are more particles of reactant knocking about between the water molecules, which make collisions between the important particles more likely. ...read more.

Middle

I predict this because I know that the higher the concentration of the acid, the greater the number of acid molecules present in that volume. This means that there are more acid molecules colliding with the particles on the surface of the reactant (magnesium) thus increasing the rate of reaction. Fair Test In order to keep my experiment a fair test I will have to make sure that I keep the following factors the same:- temperature of the Hydrochloric Acid, the same size, amount and roughly the same mass of the magnesium ribbon used, concentration of the Hydrochloric acid in each of the three times I do the experiment with the same concentration, I will also have to make sure that the gas syringe is connected properly, this is so that no gas that is given off can escape. I must also take the reading of the amount of gas given off at the same interval of time, on each occasion the experiment is done. Apparatus Conical flask Stop-clock (sensitivity 1/10s) Magnesium (5cm long) ...read more.

Conclusion

I was right in my prediction but I did not predict that the rate of reaction slows down as time goes on which did happen in my experiment. Evaluation My experiment all went to plan as it was meant to, apart from the last set of three in which I had the acid measured out at 50ml and no water to dilute it, the experiment went wrong because I think might have measured out incorrectly the diluting substance i.e. water. I then redid those three experiments and put them at the bottom of the original table. Although the last few experiments were differed form what they should have been on the whole I measured and conducted my experiments with care and precision, this way I can be sure my conclusions are accurate. If I would have had more time to do another lot of the experiments so instead of doing each one three times I would have done it four or five so that the average could be more accurate. As well as having more time I think if I would have had more accurate equipment the results would have been more precise as to 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 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. Free essay

    Close Your Eyes

    The club was getting more and more packed which meant that it was most probably late. I couldn't be bothered to check the time so just sat there talking, or more shouting, to Dougie. None of us really had much to drink apart from Louise, she seemed addicted to those Smirnoff ice's and just kept getting more.

  2. To investigate the effect of the concentration of nitric acid on the rate of ...

    All other concentrations will be below this. I will achieve more concentrations of acid by diluting the nitric acid with water to weaken the strength of the acid. 3) SIZE OF SOLID PARTICLES (or SURFACE AREA) Surface area also plays a big part in the rate of reactions.

  1. How concentration Affects The Rate of Reaction of Hydrochloric Acid and Magnesium Ribbons.

    * The speed increase happens because smaller pieces of the same mass of solid have a greater surface area compared to larger pieces of the solid. * Therefore, there is more chance that a reactant particle will hit the solid surface and react.

  2. How Concentration Affects the Rate of Reaction of Hydrochloric Acid and Magnesium Ribbons

    If the concentration of any solution is high that means the number of particles present in the solution is great, which would also result with more successful collisions, and therefore rate of chemical reaction would increase. Surface Area. If there is a solid reactant involved in a chemical reaction,

  1. Investigate, analyse and evaluate the effect on the rate of reaction of varying the ...

    HCl in each experiment although the concentration of it will change, I will use the same set up of apparatus for each experiment and the same air temperature and air pressure and I will also time the reaction for the same amount of time on each experiment so all the

  2. The effect of varying the concentration of the reaction between magnesium and hydrochloric acid

    In this investigation we must consider the topic of variables. Clearly, the time taken for the magnesium to disappear when it is placed in different concentrations of hydrochloric acid is related in some way. The higher the concentration of hydrochloric acid you use, the less time it takes for the magnesium ribbon to disappear and so the rate reaction increases.

  1. To investigate the effect of varying the masses of white sugar and yeast and ...

    The measuring cylinder was placed vertically placed into a thermostatic water bath at 27oC with the water covering at least 3/4 of the measuring cylinder. The stopwatch was immediately started and the volume the dough had reached was recorded every minute for 15 minutes.

  2. To Investigate the Effect that the Concentration of Acid has on a Reaction

    This is why it is called an exothermic reaction. Method: In this experiment I will be using 8 different concentrations of hydrochloric acid. But in the labs in school we do not have this many different concentrations of HCl so I will have to make up the 8 concentrations myself.

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