Our aim is to investigate how much quicker Essay

Aim- Our aim is to wonder how oer often quicker a chemical reception eliminates if the dose we purposes chroma goes up, and likewise to entail if at that dwelling house is a pattern which could be carried on to higher(prenominal) effectuality red-hots. orbit Science- Chemical responses play a very important part in our life, much than than or less even keep us alive (the process of our digestion system is a series of chemical answers which convert nutrition into chemicals which squeeze expose be more slowly used by our bodies), other quite a little where chemical reactions be used in our bodies that cut down the gist of dot in your stomach, there are in like manner chemicals in washing powder for removing stains by using chemicals called enzymes which hotfoot up the partition of the chemicals in stains.All chemical reactions happen at various speeds, such as chemicals in fireworks which react very fast, inwardly seconds of the firework being lit the reaction is over. Slow chemical reactions could be such things as the ripening of cheese so it sens mature over while. approximately adhesives we use require two chemicals to be mixed dep supplanting on the amounts used it could key out the glue harden chop-chop or slowly. Some reactions happen slowly whereas some happen very fast. The name in which we heartbeat a speed of a reaction is called a Rate Of response.It can be measuring rodd in two ways, either the rate in which one of the products is produced, one of the products that is produced is fluff, you can banknotement go down on in a syringe or in a tip-tilted burette. Another method that can be used is interpreting mass of the reactant, (how much the mass has added to its pondert of lost). The mass could be recorded both minute and could be written like this, 1. 0g/60secs. Variables- We had four variables to call for from, Temperature, preoccupation, Surface neighborhood/Pressure and Catalyst.If we were to use temperature we would measure how much quicker the reaction would go if the dit and calcium were heat up together, but we would maintain to keep the temperature at a constant heat as it wouldnt be a median(a) test if the reactants were getting hotter and colder. If we were to use a catalyst it would be used to speed up the reaction, but this would be partial because we wouldnt be able to measure how much extra speed is being put in by the catalyst.Or we could change the surface area of the reactant, this would unwrap the social disease more of a area to act on, to measure this we would let to press the calcium first then get word it to the acid for a certain epoch and then take it out and weigh it, making sure we use the self analogous(prenominal) tautness of acid each epoch to make it a fair test. We refractory to use Concentration, for this we would change the effectuality of concentration each time and take a volume of louse up that is checkn mutilate every ten seconds.From choosing the variable Concentration we can measure the rate of gas that is being addicted of, this could be effective because we could work out how much gas per minute is being given aside, from that we can then predict how much gas is being given slay for every time you need to find. Prediction- I think that as the potency of the acid goes up the rate of reaction give go up. Collision Theory- I think this will happen because the higher the strength of the solution the more particles there are in the solution, which intend more collisions more frequently.The acid will touch the calcium carbonate, if there is enough postcode in the acid the calcium and acid will react together to give off Carbon Dioxide. The more the particles jolt the faster they react. I comport make a predicted represent, showing what I think the graph will look like. I have drawn in the lines of shell fit showing the steepness of the line. This plat shows how the acid particles shak e up with the marble flake to give off a gas. method- Set up apparatus as shown above. 1. Measure out in demand(p) amount of marble chips. 2.Measure out desired amount of hydrochloric acid 0. 25 inguen first, then when all experiments with 1 inguen have been completed go onto 0. 5 mol then 1 mole then 1. 5 and finally 2 mole. 3. engage up the water bowl. 4. Fill measuring piston chamber with water up to 100 ml. 5. Holding hand over the top of the measuring cylinder quickly turn it upside down and place it under the water (as shown above). If the water comes out refill the cylinder and try again. 6. coiffure organ pipe so one end is coming up in the cylinder under water. 7. Put the marbles in the chronicle flask. 8.Pour in the hydrochloric acid and quickly affix the top with the tube coming out of it into the chronicle flask. 9. find at what time you will measure how much gas is given off. We refractory to take a watching every 10 seconds, we also decided to instigate t aking the readings at 30 seconds. You measure how much gas is given off by the water dropping in the measuring cylinder. E. g. 10 mls given off in the first 30 seconds. 10. quest these readings for 100 seconds using a hold watch to be precise. I am going to take 3 repeats, I am doing 3 because I can get a fair add up from these 3 results.From the averages I will spell a graph to compare the dissimilar strength acids. Analysis- (Graphs). From my graphs I distinctly show the variable of different strengths of acids. As I used higher strength acids, the time in which the gas was produced got much faster. As the acids get stronger the lines become more inline. Whereas the 0. 5 points were all over the place. From my results I can see that my prediction was gear up I think that as the strength of the acid goes up the rate of reaction will go up.I could see that from my results the strength of acid went up and the speed it took to make the gas went down. This think to the collisio n theory, that is that as the strength of the acid went up there were more particles to collide on the marble, which meant that more gas was given of due to more particles in the vitiated mixture. The higher the strength of acid the more accurate the results became, we can see this because the play bars get smaller as the strength of the acid gets stronger. From the predicted graph I can see a divergence in the results graph.The 1 mole strength acid has taken longer than the 0. 5 mole acid to produce the gas. I will explain the possible reasons for this more in my evaluation. Evaluation- The main obstacle we faced was with the 2 mole strength acid because it reacted so fast we that had time to read the times precisely. This may have meant we had unfair results. The main inconclusive results were the 1 mole results, because from the information we have (collision theory) it tells us that it is stronger than the 0. 5 mole which means it should be lower than on the graph than 0. 5. But it isnt.This may have been because the results were read wrong, the acid we used may have been slightly too strong or the marble chips we used may have been smaller which means it is easier for the acids to break down. To remediate the accuracy we could use a burette, which are far more accurate than a measuring cylinder or a gas cylinder. Gas Syringe burette Computer data collectors are a very accurate way of registering the time, also if you were to use a camera fipple flute so you could look back at it and pause it when it got to the times when you needed to record a time.The results would never be the same because sometimes the measurement of marble chips possibly slightly more or less, or the accuracy of reading the time would be slightly out etc. As I said earlier in my investigation the results seemed to become more good as the strength of acid went up. Although it should be less accurate to measure the time as the acid strength went up it seemed to be more accura te. James pass 11N Rates Of Reaction Investigation.