Total mass of the Element/Compound (Part)Total mass of Compound (Whole) x 100 The formula above is the formula used to determine the percentage imposition of an individual element in a compound. In this experiment, the researchers are both going to solve for the theoretical percentage composition and the experimental percentage composition of elements/ ions. The theoretical percent composition is solved using a known formula compound and an experimental percent composition is solved using data identified in the experiment.
The goal of this experiment is to formulate a diminutive percentage error as possible, which is solved using the formula below. Theoretical value- Experimental volumetrically value x 100 The compound that they are going o use in this experiment is KICK or potassium chlorate. Potassium chlorate, when heated to high temperatures would form this equation: COCK’S (s) A CLC (s)+302 (g) Procedure The experiment was composed of two parts. The first part was for determining the percentage composition of potassium chlorate.
First, the researchers made sure that the crucible, which would be used throughout the experiment, was dry, so they heated it on a clay triangle for 2-3 minutes. Next, they let the crucible cool down a bit and then weighed it together with its cover. Then they added 1 . 196 g f potassium chlorate into the crucible, placed its lid and then weighed it. After that, they heated the crucible again on the clay triangle for 8 minutes with its bottom 2. 5-3 inches away from the flame. They heated it for another 10 minutes, that time adding a little bit of distance between the flame and crucible bottom.
They allowed the crucible to cool for about 10 minutes. Then they reweighed the sample for 6 more minutes, cooled it and then weighed it again. In the second part of the experiment, they took 3 test tubes, one containing a small amount of potassium chloride, one with a like amount of potassium chlorate, and one that maintained a solution obtained from adding distilled water to the crucible, that was used in the first part of the experiment, and heated it for about a minute, and then they added 10 ml of distilled water to each and stirred.