Energy changes neutralisation

... his means that the reaction is faster, but should also give off a lot of heat.

Obtaining Evidence:

Whilst I worked on this experiment, I used extreme care and followed all the points covered in the risk assessment. When I conducted this experiment, I had re-do it. This is because the method I primarily used wasnīt fair. My teacher pointed this out to me. To start with, I was going to do the experiments in the same way, but put a one-minute time limit on it. I thought that that would be an efficient way to conduct it, because then each experiment would be the same length. I believed that this would be fair because I didnīt think very carefully about it. It was the made obvious to me, after I had conducted several experiments, that this wasnīt fair. This was because I was trying to find the temperature, the maximum. If I put a one-minute time limit on this, then Iīm not giving the temperature a fair chance. The temperature may have reached its maximum, then dropped, or it could still be on its way up. My teacher suggested another way I could have done this. She said that I could take the temperature at 10-second intervals. However I chose to do it differently. I didnīt put a time limit on it, but I still timed the reaction, so that I had more numbers to play with. This experiment was now fair. Another point at which I asked for help was with the pH values I was gaining. I thought it was odd that in a neutralisation reaction, I was achieving, for example, a bright red colour. (A strong acid.) My teacher helped me by explaining that a neutral solution would probably not be gained, unless the acid and alkali particles were exactly the same amount. This is obviously very hard to do. So I didnīt worry about this too much, but just tried harder to measure very accurately.

Results

CHEMICALS TEMPERATURE AT START (šC) TEMPERATURE AT END (šC) THE pH TIME TAKEN (seconds) Strong aci ...