Continuous variations method Jobs method Prelab questions 1

Continuous variations method (Job\'s method) Pre-lab. questions: 1- A divalent metal ion (M2+) reacts with a ligand (L) to form a 1:1 complex. Calculate the Concentration of M2+ in a solution prepared by mixing equal volumes of 0.20 M (M2+) and 0.2 M (L). KF = 1.0 X 108 2-Derive the equation n = X/(1-X)

Let the metal ion react with the ligand according to the following equation:

M²⁺ +L --->[ML]²⁺ (1:1 ratio)

Kf=formation constant=[ML]²⁺/[M²⁺][L]

For equal volume,V of M and L

mol of M and L=[M]=[L]=0.2M*V

[M]=[L]=0.2MV/2V=0.1M

ICE table

keq=1/kf=[M][L]/[ML2+]=x^2/0.1-x

1/1.0*10^8=x^2/0.1-x

10^-8=x^2/0.1 [x<<<0.1]

10^-8=x^2/0.1

x=0.316*10^-8M=

[M2+] =x=3.16*10^-9M (Answer)

	[M2+]	[L]	[ML]2+
initial	0.1M	0.1M	0
change	0.1-0.1	0.1-0.1	0.1
completion	0	0	0.1
equilibrium	x	x	0.1-x

$Continuous variations method (Job\'s method) Pre-lab. questions: 1- A divalent metal ion (M2+) reacts with a ligand (L) to form a 1:1 complex. Calculate the Co$

Continuous variations method Jobs method Prelab questions 1

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