The following questions refer to the following system: 500.0 mL ...

[Beheh]

Question 1

The correct mathematical expression for finding the molar solubility (s) of Sn(OH)₂ is:

◦ 2s² = K_sp

◦ 2s³ = K_sp

◦ 108s⁵ = K_sp

◦ 4s³ = K_sp

◦ 8s³ = K_sp

Question 2

The following questions refer to the following system: 500.0 mL of 0.020 M Mn(NO₃)₂are mixed with 1.0 L of 1.0 M Na₂C₂O₄. The oxalate ion, C₂O₄, acts as a ligand to form a complex ion with the Mn²⁺ion with a coordination number of two.

 

What is the equilibrium constant for the following formation?

Mn²⁺+ 2C₂O₄^2–

[Mn(C₂O₄)₂]^2–

	Mn2+ + C2O42– MnC2O4		K1 = 7.9 × 103
	[Mn(C2O4)2]2– MnC2O4 + C2O42–		K2 = 1.26 × 10–2

 

Reference: Ref 16-2

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◦ 1.0
◦ 3.7 × 10²
◦ 2.1 × 10^–1
◦ 6.3 × 10⁵
◦ None of these are correct.

[kjohnson]

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[Beheh]

Gracias!

[Joy Chen]

Thanks for the timely response, appreciate it