Show whether seawater of the composition given in the table satisfies electroneu

Question

Show whether seawater of the composition given in the table satisfies electroneutrality. (In order to show electroneutrality, the sum of the molarities of the cations multiplied by the charge of the cations should be equal to the sum of the molarities of the anions multiplied by the charge of the anions)

Ion Conc. Units 18.980%0 Na+ 10.560 ‰ S042-2.560 ‰ Mg2+ 1.272‰ Ca+0.400o 0.380 900 HCO3-0.142 ‰ 0.065 % Cl- Br B(OH4.6 ppm 13 ppm Sr2+ F- Rb+ A13+ 1.4 ppm 0.2 ppm 0.17 ppm 0.1 ppm 0.05 ppm 0.05 ppm 2t Ba

Explanation / Answer

Remember 1 ppm = 0.0001 %
1st add the concentration of positive charges. Wherever the positive charge is 2, miltiply the concentration by 2
concentration of positive charge = 1*10.56 + 2*1.272 + 2*0.4 + 1*0.380 + 2*0.00013 + 2*0.00002 + 3*0.000017 + 1*0.00001+2*0.000005
= 14.284371

Similarly calculate the negative charges: 1*18.98 + 2*2.56 + 1*0.142 +1*0.065 + 1*0.00046 + 1*0.00014+1*0.000005
    = 24.something
Clearly positive charge and negative charge concentration is different.
So this composition doesn't satisfy electroneutrality

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.