Chromates, solubility-product constant

Because silver chromate is more soluble, the Ksp value (soluble product constant) of silver chromate is not exceeded until the precipitation of Cl is complete. The endpoint can be corrected by using the Mohr method to standardize the silver nitrate solution against pure sodium chloride. 

The solubility of silver chromate (Ag2Cr04) in 500 mL of water at 25°C is 0.0129 g. Calculate its solubility product constant. 

One (1.00) liter of a saturated solution of silver chromate at 25°C contains 0.0435 gram of Ag2Cr04. Calculate its solubility product constant. 

The solubility product constants of silver chloride, AgCl, and silver chromate, Ag2Cr04, are 1.8 X and 9.0 X... 

The solubility product constants of silver chloride, AgCl, and silver chromate, Ag2Cr04, are 1.8 X 10 ° and 9.0 X 10 , respectively. Suppose that the chloride, Cl (aq), and chromate, Cr04 (aq), ions are both present in the same solution at concentrations of 0.010 M each. A standard solution of silver ions, Ag+(aq), is dispensed slowly from a buret into this solution while it is stirred vigorously. Solid silver chloride is white, and silver chromate is red. What will be the concentration of Cl (aq) ions in the mixture when the first tint of red color appears in the mixture ... 

The equilibrium constant, K, is also known as the solubility product constant or simply the solubility product. Since the solid silver chromate does not affect the equilibrium position, it is omitted from the expression. The ion concentrations are those found in a saturated solution. This is the solubility product expression for Ag2Cr04. 

Notice that the value of this solubility product constant is small there are relatively few silver or chromate ions in aqueous solution at 25 °C. If changing the solution composition shifts the equilibrium in Equation 1 to the right, more solid will dissociate and the solubility will increase relative to the solubility of silver chromate in pure water at 25 °C. If the equilibrium shifts to the left as different solution compositions are used, then the solubility relative to that in pure water will decrease. 

Analyze We are given the equilibrium concentration of silver ion in a saturated solution of silver chromate. From this we are asked to determine the value of the solubility-product constant for the dissolution of silver chromate. The equilibrium equation and the expression for Kgp are... 

Write the solubility product dissociation constants for silver (I) chromate (Ag2CrO ) and strontium sulfate (SrSO ). 

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