Measurement and Results - How to make a Na, K, Ca, Cl solution from salts
I need to make a solution with following ion concentration without using hydroxides. Please advise about the suitable compounds and amounts: Na 150 mmol/L, K 5.0 mmol/L, Cl 115 mmol/L, Ca 0.9 mmol/L.
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admin
Total posts: 529
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There are several approaches that could be followed, but one recommendation would be to use the following compounds diluted in water: Na2CO3 for Na, KNO3 for K, NH4Cl for Cl, and CaCO3 for Ca. The concentrations mentioned will all be stable and the compounds should dissolve easily in water. A simple recipe would be to add 7.95 grams Na2CO3, 0.506 grams KNO3, 6.15 grams NH4Cl, and 0.09 grams of CaCO3 to a liter of water. The resulting solution would have Na, K, Cl, and Ca concentrations that match your specifications assuming the salts are 100% pure. If the salts are not 100% pure, then the corresponding weights of starting materials would need to be increased to account for that effect.
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