00:01
Hello students, let's begin with this question.
00:02
In this question it is given that 0 .002 mole of calcium chloride is given and we have to find out the ionic activity coefficient and the mean activity coefficient by using the debye -huckel equation.
00:19
So, the debye -huckel equation used to find out the ionic activity coefficient is log gamma plus minus 1 is this plus minus is equals to minus 0 .509 mod of z positive z negative into under root of i.
00:40
Now, firstly, the z positive and z negative are charges.
00:43
So, calcium have plus 2 charge and chlorine has minus 1 charge and this i value is equals to 0 .002 mole per kg, this value is given.
00:55
Now, after that substitute the values over here.
00:59
So, here comes to be minus 0 .509.
01:02
So, here is the mode.
01:04
So, here comes 2 multiply by minus 1, this the mode means the value should remain as the positive...