Table 1b. Standardization of EDTA...

Table 1b. Standardization of EDTA Solution: Calculations Concentration of Standard Ca Solution, mol/L Titration Number 1 2 3 Amount of Ca, mol Amount of EDTA, mol Concentration of EDTA Solution, mol/L Average Concentration of EDTA Solution, mol/L Standard Deviation Relative Standard Deviation, ppt

Transcript

00:01 Hello everyone so particularly in this question we are going to be finding out the concentration of standard concentration of standard c is a calcium solution mole divided by later more divided by later so here we have been provided actually our data of when we are going to do the standardization of particularly edta solution so here three data has been given when we are doing the kind of a titrations one two and three so the we have to be finding out amount of ca is going to be present in a mole amount of edta is going to be used concentration every standard deviation relative deviations with what with your ppd part per thousand so these are the things which we need to be calculated in this particular question so one by one the step by step we are going to be moving forward so according to that we are going to be find out and first of all we are going to be find out the molarity okay so let us start up and so we are going to be considering first of all number of moles of ca number of moles of what ca is equal to mass taken okay whatever the mass is taken divided by molar mass so thing is going to be given in this particular data so we are going to to be using those things that's it so mass taken of this ca is a given that is 4 0 .0.

01:41 Yeah it will be the 0 .4003 divided by molar mass of ca we are knowing that how much it will be 1 0 that too it's given in the in the table only that is 1 0 .0 .0 .7 that is the gram that is in the gram gram divided by mole so when we are doing the calculate this thing particularly what we are getting we are getting in the form of 0 .004 mole so this is whatever what number of mole is going to be of c in it came this one so after that what we are going to be if we are going to be step by step we have to be follow this is very very important volume that is given 0 .5 liter right then molarity if you are going to be finding the molarity so formula of molarity is equal to number of mole divided by volume right simply it's very simple so what we can write number of mole number of moles divided by what we have to divide by the volume in liter so order it is given number of moles which we have been calculated this and this simply we have to do the divide over here so number of mole just we calculated 0 .04 divided by volume how much volume is given 0 .5 liter okay that is in the liter so that's why i have written so what we are getting we are getting a molarity after getting the molarity that is how much 0 .008 mole right this is this is what we are getting this will be the first one which we are need to be find out okay this is got this we get next we need to we need to see next one that will be the amount of c now amount of c is small okay okay i'll write over here amount amount of calcium that will be the mole form is equal to we can see is same now there will be hyphen is same of same for set one set two and set three that three of its remains same okay this will be the particular thing is going to be happening so for that when we are finding the polarity what we are getting we are same thing we have to do number of mole okay number of moles divided by volume in later so after doing this what we are getting we will say that number of moles number of moles is equal to molarity because that what we have to find out right amount of ca which is present in the first second and third set polarity multiplied by volume in later volume in later so so, molarity we are knowing just we have calculated that is how much 0 .004, right? sorry, 0 .008 which we get right now.

04:44 So putting those values over here, we will going to be right it over here.

04:48 First of all, what are the thing which is given? malarity is equal to how much is equal to 0 .008, which we have been calculated right now...

Question

Table 1b. Standardization of EDTA Solution: Calculations Concentration of Standard Ca Solution, mol/L Titration Number 1 2 3 Amount of Ca, mol Amount of EDTA, mol Concentration of EDTA Solution, mol/L Average Concentration of EDTA Solution, mol/L Standard Deviation Relative Standard Deviation, ppt

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