Hydrochloric acid Essay Example

the cylinder. There are various potential sources of uncertainty and error in our experiment. For instance, we detected that fragments of our reacting magnesium ribbon could have detached and risen to the surface.

Although there is a possibility that these particles did not react with the HCI, resulting in an inaccurate measurement, another source of uncertainty in our experiment is the escape of some bubbles of Hydrogen gas into the beaker. Despite being careful about removing the thistle tube from under the graduated cylinder after adding the HCI, there is no seal to prevent bubbles from escaping during the reaction of Magnesium. Therefore, the conclusion is that the measurement of gas in all trials was inaccurate, leading to an incorrect calculation of the amount of consumed magnesium and moles. It is important to note that significant figures contribute to increased accuracy in this experiment.The multiplication and division rule in this experiment states that when multiplying or dividing, the result must be reported with the same number of significant figures as the measurement with the fewest significant figures. Measurement is crucial in determining the required number of significant figures, and this must be applied consistently throughout all calculations. The tables above provide examples of the significant figures in each calculation.