A 100.-mL sample of solution contains 10.0 mmol of Ca 2+ ion. How many mmol of solid Na 2SO 4 must be added in order to cause precipitation of 99.9% of the calcium as CaSO 4? The K sp of CaSO 4 is 6.1 × 10 –5. Assume the volume remains constant. a. 10.0 b. 17.4 c. 71.0 d. 6.1 e. 61.0
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A 100.-mL sample of solution contains 10.0 mmol of Ca 2+ ion. How many mmol of solid Na 2SO 4 must be added in order to cause precipitation of 99.9% of the calcium as CaSO 4? The K sp of CaSO 4 is 6.1 × 10 –5. Assume the volume remains constant.
a. 10.0b. 17.4c. 71.0d. 6.1e. 61.0
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