A student has 10 mL of a solution that might contain any or all of the following cations at 0.01 M concentrations: Mn2+, Ba2+, A
g+ , and Cu2+. Addition of 10 mL of 1 M HCl causes a precipitate to form. After the precipitate is filtered off, 1 M H2SO4 is added to the filtrate and another precipitate forms. What is the second precipitate
<span>For the answer to the question above, Addition of HCl causes a precipitate to form: Ag+ & Cl- -- AgCl a white ppt
H2SO4 is added to the supernate another precipitate forms: Ba+2 & SO4-2 --> BaSO4 a white ppt
a solution of NaOH is added to the supernatant liquid until it is strongly alkaline. No precipitate is formed: no Mn+2 & no Cu+2 which would have ppt as hydroxides</span> I hope this helps you.
<span>D.) Oxygen would acquire a stable arrangement of electrons by bonding with two atoms of "Magnesium" [ As Mg has 2 extra electrons & their size are quite similar ]
