00:01
Good day, the topic is about percent purity.
00:03
If we wish to find the percent of the component in a sample, then we take the ratio of the mass of the component to mass of the sample and multiply that by 100%.
00:12
In this problem, we're given that a sample, a 500 milligram tablet of vitamin c is dissolved in water and titrated, such that 4 .8 ml of 0 .05 molar of potassium iodate solution is needed to completely oxidize the vitamin c in the tablet, or that means to titrate the solution form from dissolving the even amount of the tablet in the solution.
00:43
Given with the equation that is for the reaction that is responsible for the titration process, we wish to find the percent of vitamin c in a sample.
00:53
So to start, let us take note of the relationship that we need from the balance equation.
00:59
So we shall use the coefficients namely the coefficient of i .03 minus the iodate ion which is one and related with the amount of iodine that is formed in the reaction reaction one and furthermore this iodine reacts with the vitamin c and reaction two such that one mold of the vitamin c reacts with one more of the iodine.
01:33
So we have one mole of iodate ion forms three moles of iodine and that one mole of iodine reacts with one mole of your vitamin c...