Distinction Level BTEC Applied Science Assignment A - Titration Practical - Making a standard solution (Verified)

Distinction Level BTEC Applied Science Assignment A - Titration Practical - Making a standard solution (Verified) Why is it important to calibrate equipment Making sure that your equipment is calibrated is a crucial step in assuring the accuracy of your data. If you use equipment that read the wrong quantity, they'll be useless. If this step is skipped, it might lead to working with too much or too little of a substance, which can be problematic in some situations. To ensure that our results are as precise as possible, we calibrated scales. This allows us to calculate the amount of waste product. It also aids us in determining which measures we need to alter in order to achieve better outcomes. Method on calibrating scales 1. First tare your skills and make sure that it reads 0 2. Then carefully place a standard weight in the middle of the scale 3. Wait for the scale to stop processing the scale 4. Write down your results in a table 5. Assess if your results shown on the scales correspond with the actual weight of the scales My hypotenuses All of the standard weights, I predicted, would appear on the scale at their identical weight. My results Standard weight Reading on the scale 1g 1.00 g 2g 2.00 g 3g 3.00 g 5g 5.00 g 10g 10.00 g 20g 20.05 g 30g 30.8 g 40g 40.11 g 50g 50.12 g Evaluating my results My prediction did not match my results, as you can see. I had never calibrated a scale before and was surprised to discover that my prediction was incorrect. The scales were correct up till the 5g, however it was a few decimetres heavier than it should have been. implying that the scale would be inaccurate for weights more than 5g. This might be because the school scales are old and not taken seriously by students, so they have been broken; nevertheless, if I were to use modern scientific scales, the scales would read precisely the same as the normal weight. Calibrating a 25ml pipet In order to construct my standard solution, I needed to calibrate the equipment I used, much like the scales, to ensure that the acid I used read to a precise point i had to calibrate the 25ml pipet Equipment used to calibrating a 25ml pipet  pipet  distilled water  measuring scales  beakers (x2) 50ml and 100ml  pipet pump method for calibrating a 25ml pipet 1. weight a clean 50ml beaker on a calibrated and tarred measuring scale 2. To the closest milligrams, read the weight of the beaker. 3. take a note of the 50 mL beaker's result. 4. put a rough inaccurate amount of water into the 100 ml beaker 5. connect the pipet pump onto the 25ml pipet. 6. Fill to the 25ml meniscus with accuracy. (Make sure that when drawing up the water the pipet does not touch the beaker as they are fragile and can easily break) 7. Release the water in the 25ml pipet into the pre-weighed 50ml beaker (Make sure that the pipet Is fully drained this could take around 20 seconds) 8. Weigh the 50ml beaker again, but this time with the water. (Find out the mean of mass of the beaker by using the density and temperature of the water) 9. Once you've calculated the mass, compare it to the quantity of water that should have been moved technically. 10. Carry out this calibration procedure three times more. 11. then find out the average Why calibrate a volumetric flask