For the complex ML2, stepwise formation constants for M + L leftharpoons ML ML + L leftharpoons ML 2 are 4 and 3 . Hence, overall stability constant for M +2 L leftharpoons ML 2 is:

Question

For the complex ML2, stepwise formation constants for M + L leftharpoons ML ML + L leftharpoons ML 2 are 4 and 3 . Hence, overall stability constant for M +2 L leftharpoons ML 2 is: (A) 12 (B) 7 (C) 1.33 (D) 0.75

Tardigrade Admin · Accepted Answer

M + L leftharpoons ML , K 1=([ ML ]/[ M ][ L ])=4 ML + L leftharpoons ML 2, K 2=([ ML 2]/[ ML ][ L ])=3 M +2 L leftharpoons ML 2, K 3=([ ML 2]/[ M ][ L ]2) K 3= K 1 K 2=12

Q. For the complex $M L_{2}$ , stepwise formation constants for
$M + L ⇌ M L$
$M L + L ⇌ M L_{2}$
are 4 and $3.$ Hence, overall stability constant for
$M + 2 L ⇌ M L_{2}$ is:

12

7

1.33

0.75

$M + L ⇌ M L, K_{1} = \frac{[ M L ]}{[ M ] [ L ]} = 4$

$M L + L ⇌ M L_{2}, K_{2} = \frac{[ M L _{2} ]}{[ M L ] [ L ]} = 3$

$M + 2 L ⇌ M L_{2}, K_{3} = \frac{[ M L _{2} ]}{[ M ] [ L ] ^{2}}$

$K_{3} = K_{1} K_{2} = 12$

Q. For the complex ML2​, stepwise formation constants for M+L⇌ML ML+L⇌ML2​ are 4 and 3. Hence, overall stability constant for M+2L⇌ML2​ is:

12

7

1.33

0.75

M+L⇌ML,K1​=[M][L][ML]​=4 ML+L⇌ML2​,K2​=[ML][L][ML2​]​=3 M+2L⇌ML2​,K3​=[M][L]2[ML2​]​ K3​=K1​K2​=12

Q. For the complex $M L_{2}$ , stepwise formation constants for
$M + L ⇌ M L$
$M L + L ⇌ M L_{2}$
are 4 and $3.$ Hence, overall stability constant for
$M + 2 L ⇌ M L_{2}$ is:

$M + L ⇌ M L, K_{1} = \frac{[ M L ]}{[ M ] [ L ]} = 4$

$M L + L ⇌ M L_{2}, K_{2} = \frac{[ M L _{2} ]}{[ M L ] [ L ]} = 3$

$M + 2 L ⇌ M L_{2}, K_{3} = \frac{[ M L _{2} ]}{[ M ] [ L ] ^{2}}$

$K_{3} = K_{1} K_{2} = 12$