00:02
First of all, molar mass of co, cl2, that is atomic mass of copper plus 2 multiplied by atomic mass of chlorine, that is, we have 63 .5 plus 2 multiplied by 35 .5.
00:30
So this will be equal to 134 .5 gram per mole.
00:40
Now we will calculate molarity here for cocl2 for given mass.
00:49
So molarity, that is the method to determine the concentration of solution and that is the number of moles of solute dissolved in one letter of solution.
01:02
So the formula is number of moles of solute divided by volume of solution and that should be in later according to definition.
01:33
Okay.
01:35
Now putting the values further, i can say that number of moles for a substance, that is the ratio of mass divided by molar mass of the same substance.
01:44
So this can be written as mass of solute divided by molar mass of solute divided by or we can also write that multiplied by volume in litter of solution.
02:31
So putting the values mass is 4 .93 gram divided by molar mass we have 134 .5 gram per mole.
02:46
Multiply by volume we have 52 .0 milliliter.
02:53
So this is in milliliter.
02:54
To convert this into liter we require 1 letter consists of 1 ,000 milliliter.
02:59
So we will divide it by 1 ,000.
03:00
So now solving this we will get, so this will be equal to 0 .7048 molar...