What masses of sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, potassium chloride, and sodium bicarbonate are needed to produce 1 L of artificial seawater for an aquarium? The required ionic concentrations are  [Na+]  = 2.97 M;  [K+]  = 0.0082 M;  [Mg2+]  = 0.0627 M;  [Ca2+]  = 0.0123 M;  [HCO3−] = 0.0018 M;  [Cl−]= 3.01 M;  [SO42−]= 0.0590 M.

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What masses of sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, potassium chloride, and sodium bicarbonate are needed to produce 1 L of artificial seawater for an aquarium? The required ionic concentrations are 

[Na+]

 = 2.97 M

[K+]

 = 0.0082 M

[Mg2+]

 = 0.0627 M

[Ca2+]

 = 0.0123 M

[HCO3] = 0.0018 M
[Cl]= 3.01 M
[SO42−]= 0.0590 M.
 
Expert Solution
Step 1

The salts that are present are listed as NaCl, MgCl2, Na2SO4, CaCl2, KCl and NaHCO3. The artificial saltwater has a volume of 1 L. Because the chemicals are all ionic, they may ionize in water and produce cations and anions. 

There is just one compound that contains Mg, MgCl2.1 mole of MgCl2 yields one mole of Mg2+. As a result, the concentration of MgCl2 is 0.0627 M.

There is just one compound that contains SO42-, Na2SO4.1 mole of Na2SO4 yields one mole of SO42-. As a result, the concentration of Na2SO4 is 0.0590 M.

Similarly, Ca2+ is present only in CaCl2 . 1 mole of CaCl2 yields one mole of Ca2+. As a result, the concentration of CaCl2  is 0.0123 M.

Same is the case for KCl and concentration of KCl is 3.01M whereas the concentration of NaHCO3 which contains HCO3- has concentration of 0.0018M.

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