..ooo Verizon LTE 4:26 PM 59% webassign net (c) After the addition of HCI, the a

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..ooo Verizon LTE 4:26 PM 59% webassign net (c) After the addition of HCI, the above sample is centrifuged and decanted. Which of the following cations remaining in the supernatant could you separate, by causing them to precipitate, with the addition of H2SO4? (Hint: H2SO4 is a source of sulfate ions. Select all that apply.) (d) Choose one of the cations above and write the net precipitation reaction that occurs. (Use the lowest possible coefficients. Include states ofmatter under the given conditions in your answer.) (e) After the addition of H2SO4, the above sample is centrifuged and decanted. Which of the following cations remaining in the supernatant could you separate, by causing them to precipitate, with the addition of H2CO3? (Hint: H2CO3 is a source of HCO3 and carbonate ions. Select all that apply.) (f) Choose one of the cations above and write the net precipitation reaction that occurs. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) the expected answer to provide

Explanation / Answer

Your answers to and b are correct.

c) Fromt he mixture , you removed Ag+, Hg2+2 and Pb+2.

Now we added H2SO4 .

The ion tha tis preipitated are Ba+2 and Sr+2 ion.

d) Sr+2 (aq) +SO4-2(aq) ---------> SrSO4(s)

Ba+2  (aq) +SO4-2(aq) ---------> BaSO4(s)

e) From the remaining ions which are K+, NH4+, Mg+2, Cu+2, Al+3 and Fe+3 , the ion that can be precipitated as carbonate is Mg+2.

Mg+2(aq) + CO3-2(aq) --------> MgCO3(s)

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