In calculating the concentration of [cu(nh3)4]2+ from [cu(h2o)4]2+, the stepwise formation constants are as follows: k1=1.90×104 k2=3.90×103 k3=1.00×103 k4=1.50×102 calculate the overall formation constant (kf) for the formation of [cu(nh3)4]2+ from [cu(h2o)4]2+.

Kf = 1.11x10¹³

Explanation:

The value of Kf for a multistep process that involves an equilibrium at each step, is the multiplication of the constant of the equilibrium of each step.

Kf = K1xK2xK3xK4

Kf = 1.90x10⁴ x 3.90x10³ x 1.00x10³ x 1.50x10²

Kf = 1.11x10¹³

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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answer seismograph;