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How the concentration of acid affects the rate of reaction?

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Introduction

Chemistry coursework How the concentration of acid affects the rate of reaction? What I already know I already know that there is five different key factors in which could affect the rate of reaction these are: * The Concentration of the Acid * The temperature of the surroundings * The surface area of the reactant * If a catalyst was used * The amount of gas pressure used I am going to investigate in how a change of concentration affects the rate of reaction, having used previous knowledge of this I already know that the higher the concentration the higher the rate of reaction, I also know that this is because the higher the concentration, the faster the positive (+) hydrogen ions move around resulting in much more collisions resulting in the acid reacting with the reactant (in my case a limestone chips resulting with faster rate of reaction. Method 1. Collect a pair of goggles 2. Collect all of my equipment and set it all up 3. Put a measuring cylinder full of water upside down inside a half full bowl of water. 4. Connect a delivery tube to the bottom of the measuring cylinder and to the chronicle flask. ...read more.

Middle

I am also going to repeat the experiment three times with each of the molars and then find the average for each of the times so that I get the best results possible. Main experiment using soda mint tablets For my main experiment I have decided to use Soda mint tablets as my reactant instead of limestone chips this is because it will make it more of a fair test because they are all exactly the same size and weight with exactly the same surface area all of the time so that the experiment is the fairest I can possibly make it. I am also going to repeat the experiment three times with each of the molars so that I can get the best results possible for this experiment. Method 1. Collect a pair of goggles 2. Collect all of my equipment and set it all up 3. Put a measuring cylinder full of water upside down inside a half full bowl of water. 4. Connect a delivery tube to the bottom of the measuring cylinder and to the chronicle flask. 5. Fill the chronicle flask with 20ml of hydrochloric acid. 6. Collect a Soda mint tablet and drop it into the chronicle flask full of 20ml of hydrochloric acid. ...read more.

Conclusion

I also know that after each experiment I didn't clean out the pipette so it could have had little fragments of other acids which could either make other acids stronger or diluted them to make them weaker. Evaluation Having concluded my experiment I do not think there is many ways in which I could improve my experiment as I got all of the results I expected and didn't get any anomalous results. The only way in which I think I could of improved my experiment was if I used digital recordings of how much water had gone then just to look at a measuring cylinder. I think that my choice to use soda mint tablets instead of limestone chips was correct and paid off as it worked out a lot better and it got me a lot better results I also think I was right to use these because it was a lot quicker then the limestone chips for example when I used limestone chips it took 20.30 minutes with 1 molar of hydrochloric acid and when I used soda mint tablets it only took 3 minutes for the reaction to happen with 1 molar and it only took 1 minute with 3 molar with a soda mint tablet and it took 6.30 minutes with a limestone chip which is over double the time. ...read more.

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