Calcium citrate (Ca3(C6H5O7)2; MM = 498.46 g/mol), a common food preservative, has a Ksp of 1.12 × 10-15 at 25 °C. A. Write the reaction equation for the dissolution of Ca3(C6H5O7)2 solid (in your solution sheet). B. Calculate the solubility in mg/L at 25 °C in pure water. Neglect other competing equilibria. C. Calculate the solubility in mg/L at 25 °C in the presence of 0.010 M CaCl2. Neglect other competing equilibria. Assume that 3s << 0.010 M.

Chemistry & Chemical Reactivity
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Chapter13: Solutions And Their Behavior
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Problem 68GQ: The solubility of ammonium formate, NH4CHO2, in 100. g of water is 102 g at 0 C and 546 g at 80 C. A...
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Calcium citrate; MM=498.46 g/mol, a common preservative, has a Ksp of 1.12 x 10^-15 at 25°C.
Calcium citrate (Caç(C6H5O7)₂2; MM = 498.46 g/mol), a common food
preservative, has a Kü of 1.12 × 10–15 at 25 °C.
A. Write the reaction equation for the dissolution of Ca3(C6H5O7)2 solid
(in your solution sheet).
B. Calculate the solubility in mg/L at 25 °C in pure water. Neglect other
competing equilibria.
C. Calculate the solubility in mg/L at 25 °C in the presence of 0.010 M
CaCl₂. Neglect other competing equilibria. Assume that 3s << 0.010
M.
D. Is the assumption that s << 0.010 M valid? (Yes or No)
Transcribed Image Text:Calcium citrate (Caç(C6H5O7)₂2; MM = 498.46 g/mol), a common food preservative, has a Kü of 1.12 × 10–15 at 25 °C. A. Write the reaction equation for the dissolution of Ca3(C6H5O7)2 solid (in your solution sheet). B. Calculate the solubility in mg/L at 25 °C in pure water. Neglect other competing equilibria. C. Calculate the solubility in mg/L at 25 °C in the presence of 0.010 M CaCl₂. Neglect other competing equilibria. Assume that 3s << 0.010 M. D. Is the assumption that s << 0.010 M valid? (Yes or No)
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