Esure to answer all parts. recall that there is restricted rotation around carbon-carbon double bonds. maleic acid and fumaric acid are two isomers with vastly different physical properties and pka values for loss of both protons. explain why each of these differences occurs. fumaric acid than maleic acid, giving it a higher melting point. maleic acid is than fumaric acid, giving it greater h2o solubility. in maleic acid, stabilizes the conjugate base after one h is removed, making maleic acid more acidic than fumaric acid. when removing the second h, pka2 is lower for fumaric acid than maleic acid because .

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Answerthis solution will not form a precipitateexplanationsolubility equilbrium:         pbf₂(s)  ⇄ pb²⁺(aq) + 2 f⁻(aq)the solubility product expression is    (we exclude solids from the equilibrium expression).now suppose we have the trial ion product q, which we can define as    then, we can interpret  q as the product of the concentration of the ions that we have and ksp as the product of the ion concentrations that are needed to form a saturated solution.if q > ksp, then that implies that there will be a surplus of ions that exceed the amount that is required to form a saturated solution. a precipitate will then form (the precipitate continually  forms until the surplus ions are removed and q is decreased to ksp's value).if q = ksp, the saturated solution that forms is barely saturated and the precipitate will be minimal.if q < ksp, then the ion concentration will not be enough to form a saturated solution (so no precipitate).using our information, we calculate the trial ion product:     since q = 2.7  × 10⁻⁸ < ksp =  4  ×  10⁻⁸, a precipitate will not form.