The solubility of cd(oh)2 can be increased through formation of the complex ion cdbr2−4 (kf=5×103). if solid cd(oh)2 is added to a nabr solution, what would the initial concentration of nabr need to be in order to increase the molar solubility of cd(oh)2 to 1.0×10−3 moles per liter?

Concentration of sodium bromide required = 2.38 M (around 2.4 M)

Explanation:

The equilibrium representing the complex ion formation is:

-----(1)

where K(f) = formation equilibrium

The equilibrium representing the dissolution of Ca(OH)2 is:

---(2)

where Ksp = solubility product

adding Equation (1)  and equation(2) gives the net reaction:

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.