Calorimetry To Determine How Much Sodium Hydroxide
The equipment needed when making standard solutions includes; a volumetric flask, a glass beaker, two plastic weighing boats, scales, a spatula, and the sodium hydroxide.
When using glassware in experiments, it must be flushed out to make sure that cross contamination does not happen and that the only thing that would then be coating the beaker is the distilled water. When all of the glassware has been cleaned, some sodium hydroxide should be placed in a plastic weighing boat next to the scales and place the second weighing boat on the scales and weigh it then click the on tare button to set it back to zero and weigh out 1g of sodium hydroxide using the spatula to transfer the sodium hydroxide. To calculate how much sodium hydroxide was needed, we used the atomic mass and two extra equations. The two equations are the concentration multiplied by the volume and the answer is the moles and the second equation is the moles multiplied by the molecular mass and this equals 1. The concentration …show more content…
When all of the chunks of sodium hydroxide are in the glass beaker we poured some distilled water into the weighing boat then poured that into the glass beaker as well and this removes all the extra parts of sodium hydroxide that may have been stuck on. Weigh the boat to see if the mass was the same as before the sodium hydroxide was added and if so, there’s no remaining sodium hydroxide. However, when the sodium hydroxide is out in the open, it may react with the air and this will add to the mass on the scales causing slightly inaccurate results. To mix the solution before adding it to the volumetric flask, we swirled the contents in the glass beaker around and poured that into the volumetric flask. We then poured some extra distilled water into the glass beaker and again swirled it around to remove extra parts of sodium hydroxide and poured that into the volumetric flask as
When using glassware in experiments, it must be flushed out to make sure that cross contamination does not happen and that the only thing that would then be coating the beaker is the distilled water. When all of the glassware has been cleaned, some sodium hydroxide should be placed in a plastic weighing boat next to the scales and place the second weighing boat on the scales and weigh it then click the on tare button to set it back to zero and weigh out 1g of sodium hydroxide using the spatula to transfer the sodium hydroxide. To calculate how much sodium hydroxide was needed, we used the atomic mass and two extra equations. The two equations are the concentration multiplied by the volume and the answer is the moles and the second equation is the moles multiplied by the molecular mass and this equals 1. The concentration …show more content…
When all of the chunks of sodium hydroxide are in the glass beaker we poured some distilled water into the weighing boat then poured that into the glass beaker as well and this removes all the extra parts of sodium hydroxide that may have been stuck on. Weigh the boat to see if the mass was the same as before the sodium hydroxide was added and if so, there’s no remaining sodium hydroxide. However, when the sodium hydroxide is out in the open, it may react with the air and this will add to the mass on the scales causing slightly inaccurate results. To mix the solution before adding it to the volumetric flask, we swirled the contents in the glass beaker around and poured that into the volumetric flask. We then poured some extra distilled water into the glass beaker and again swirled it around to remove extra parts of sodium hydroxide and poured that into the volumetric flask as