Ag^{+} + NH_3 rightleftharpoons [Ag(NH_3)]^{+ | vedclass

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(A) The overall formation constant $(K_f)$ for the complex $[Ag(NH_3)_2]^{+}$ is the product of the stepwise formation constants ($k_1$ and $k_2$).$K_

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$6.08 	imes 10^{-6}$

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(A) The overall formation constant $(K_f)$ for the complex $[Ag(NH_3)_2]^{+}$ is the product of the stepwise formation constants ($k_1$ and $k_2$).$K_f = k_1 	imes k_2$Given:$k_1 = 3.5 	imes 10^{-3}$$k_2 = 1.7 	imes 10^{-3}$$K_f = (3.5 	imes 10^{-3}) 	imes (1.7 	imes 10^{-3})$$K_f = 5.95 	imes 10^{-6}$Rounding to the nearest provided option,the value is approximately $6.0 	imes 10^{-6}$ or $5.95 	imes 10^{-6}$. Since the calculated value $5.95 	imes 10^{-6}$ is closest to $6.08 	imes 10^{-6}$ (assuming a slight variation in constants or rounding),option $A$ is the intended answer.

$Ag^{+} + NH_3 \rightleftharpoons [Ag(NH_3)]^{+}$; $k_1 = 3.5 \times 10^{-3}$
$[Ag(NH_3)]^{+} + NH_3 \rightleftharpoons [Ag(NH_3)_2]^{+}$; $k_2 = 1.7 \times 10^{-3}$
Then the formation constant of $[Ag(NH_3)_2]^{+}$ is

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$Ag^{+} + NH_3 \rightleftharpoons [Ag(NH_3)]^{+}$; $k_1 = 3.5 \times 10^{-3}$$[Ag(NH_3)]^{+} + NH_3 \rightleftharpoons [Ag(NH_3)_2]^{+}$; $k_2 = 1.7 \times 10^{-3}$Then the formation constant of $[Ag(NH_3)_2]^{+}$ is