Реакция #318841

Уравнение реакции

sodium hydroxide

calcium

CaCO3

phosphate

orthophosphate

→

Calcium Phosphate

Растворители

water

water

Условия реакции

Обработка

1. 1
   ДругоеTwo stock solutions were prepared
2. 2
   ДругоеThe bottles were then placed in an oven
3. 3
   Другоеheld at 70° C.

Методика

Two stock solutions were prepared as follows: solution A by mixing 600 ml of calcium stock solution (1000 ppm of Ca++ as CaCO3) and 600 ml of distilled water, and solution B by mixing 24 ml of phosphate stock solution (800 ppm as orthophosphate) and 1176 ml of distilled water. Both stock solutions were then adjusted to pH 9 with 1 percent sodium hydroxide. To each of a series of bottles was then added a 50 ml portion of solution A. To all but one of the bottles (the control) was then added 0.2 ml of 0.5 percent active solution of a polymer (the control bottle had no polymer). To each of the bottles was then added 50 ml of solution B while stirring. The bottles were then placed in an oven held at 70° C.

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