Magnesium Oxide Lab Report Results

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Part One: It was predicted after part one that the product from the combustion of Magnesium was Magnesium Oxide. This conclusion was drawn from multiple sources. First, combustion reactions require Oxygen gas, so before the experiment started, it was hypothesised that the Oxygen would bond with the Magnesium since it was the only two known reactants in the equation. The second reasoning for deciding the product was Magnesium Oxide was from the observation made during and after the experiment. As seen in results, the product formed a white, powdery substance. This was similar to the description of Magnesium Oxide which is powdery white [1]. To have more evidence to verify if the product was Magnesium Oxide, the solubility could have been tested. Magnesium Oxide is only partially soluble in water, but it is completely soluble in acids and ammonium salt solutions [1]. If the Magnesium Oxide would dissolved in an acid …show more content…
In trial 1 and 3, the crucibles were not completely cleaned which could have caused the mass of the product to be skewed. The final mass could have been skewed because left over Magnesium that did not react before would have added to the mass of the product (final mass). Another error that could have affected the lab results for part two was not having the Magnesium react completely. By not having the Magnesium completely react, the mass of the product would have been lower than what it should have been because it would have not bonded with the oxygen atoms forming Magnesium Oxide. An additional error was the precision of the data. In the lab, we had a standard deviation of 5.4 and a percent relative standard deviation of 12%. This meant the data was spread out an average of 5.4 percent for the actual percent mass gain or loss. However, since none of the Q values were greater than .98, none of the data values were rejected as outliers [5]. To make the data more precise, more than three trails would be
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