Greetings,
Calcium nitrate tetrahydrate and di ammonium hydrogen phosphate were used as precursors for Calcium and Phosphate elements respectively. Corresponding molar solution of calcium nitrate tetrahydrate and diammonium hydrogen phosphate were prepared in 100 ml DDW. Solution of di ammonium hydrogen phosphate was added dropwise in calcium nitrate tetrahydrate solution with continuous stirring. The reaction mixture was then transferred to the 800 W household microwave (SHARP, model R-218LS) to reflux for 30 min [5]. Resulting precipitates were filtered, washed with distilled water, dried in the oven at 80 ºC for 17 h and calcined in muffle furnace at 1000 ºC for 2 h.
Five samples (A, B, C, D & E) of HA were prepared with Ca/P ratio 1.5, 1.6, 1.67, 1.7 and 1.8 respectively.
Q: How do I create a molar solution of calcium nitrate tetrahydrate and diammonium hydrogen phosphate for an HA with a Ca/P of 1.67?
Please help me understand by showing calculations.
Thank you
Sincerely
BS Chemistry undergrad.
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