Question

7.Calculate the molar solubility for the binary salt MX₃ with K_sp=0.0000071. Enter your answer as a decimal number with two significant figures.

8.Calculate the molar solubility of the binary salt MX₂ with K_sp=0.000016. Enter your answer as a decimal with two significant figures.

9. Calculate the molar solubility of MX₂ (K_sp=0.0000011) in 0.085 M NaX. Enter your answer as a decimal with two significant figures.

10.Determine the molar solubility of MX (K_sp=4.2x10^-8) in 0.083 M NaCN. The metal ion M⁺ forms M(CN)₂^- (K_f=3.1x10¹⁰) in the presence of CN^- ion.

11.The metal ion M²⁺ in ammonia, NH₃ forms the complex ion M(NH₃)₆²⁺ (K_f = 5.1x10⁸). Calculate the M²⁺ concentration when the equilibrium concentrations of NH₃ and M(NH₃)₆²⁺ are 0.066 and 0.58 M respectively.

4.

Solid M₂CO₃ dissolves until a saturated solution is formed where M is a certain metal ion. This solution has a M⁺ concentration of 0.042. Determine the value of K_sp.  Remember to enter your answer as a decimal (3.5e-3 = 0.0035 ).

Answer 1

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