Introduction In this investigation I am trying to find out whether or not the concentration of hydrochloric acid affects the rate of reaction. To do this we are going to make up different concentrations of hydrochloric acid starting with 100% and working our way to 20%. Prediction I predict that as the concentration of the hydrochloric acid increases then the yield of hydrogen also increases as the reaction continues. Scientific reason I have predicted this, as there …showed first 75 words of 1532 total…

…showed last 75 words of 1532 total…Also I would make sure that I started and stopped the stopwatch at the correct time. I think that I have done what I have set out to do and that was to see if the concentration of hydrochloric acid affected the rate of the reaction. I have proved that it does effect the rate of reaction and that I am confident that this experiment worked even though I did have a few anomalous results.