Part VI Solubilitr Problem Use the solubaty table to answer the following. You d
ID: 512371 • Letter: P
Question
Part VI Solubilitr Problem Use the solubaty table to answer the following. You do not need to mix any chemioals 1. circle all of the folowing compounds that will dissolve completely (or form a ppy in HCI(aq) 2 Circle all of the following solutions that wil precipitate with addition of Cuso4 3. Circle all of the following compounds that will precipitate with additon of Mg(IOsxaq) CaCl2(aq) 4. Write the precipitate(s) that will form and remain when the following solutions are miced: excess H2So.(aq) ppt(s) m excess NaOH aq 5. A student divides an unknown compound into two tests tubes and performs these tests. When excess Pb(NO) is added to the first tube there is a precipitate When excess Hzso is added to the second test tube there is a precipitate When Kloa is added to the third tube there is no precipitate The compound could be (1 only znso. AgNO, Ba(OH)2 caca (NH) cosExplanation / Answer
(1)
Al(OH)3 is dissolved in del.HCl
CuCO3 (s) does not dissolve in HCl
Pb(NO3)2 (aq.) froms precipitate with HCl
Pb(NO3)2 (aq.) + 2 HCl (aq.) ------------> PbCl2 (s) + 2 HNO3 (aq.)
CaSO4 (s) does not dissovle in HCl
BaCl2 (aq.) no prcipitate forms
AgNO3 (aq.) froms precipitate of AgCl
AgNO3 (aq.) + HCl (aq.) -----------> AgCl (s) + HNO3 (aq.)
(2)
BaCl2 (aq.) and Pb(NO3)2 (aq.) forms precipitate with aq. CuSO4
BaCl2 (aq.) + CuSO4 (aq.) ------------> BaSO4 (s) + CuCl2 (aq.)
Pb(NO3)2 (aq.) + CuSO4 (aq.) -----------> PbSO4 (s) + Cu(NO3)2 (aq.)
NaOH (aq.) and K2CO3 solutions also form precipitate with CuSO4(aq.)
2 NaOH (aq.) + CuSO4 (aq.) ----------> Cu(OH)2 (s) + Na2SO4 (aq.)
K2CO3 (aq.) + CuSO4 (aq.) --------> K2SO4 (aq.) + CuCO3 (s)
(3)
Ba(NO3)2 (aq.) and Pb(NO3)2 (aq.) forms precipitate with Mg(IO3)2 (aq.)
Ba(NO3)2 (aq.) + Mg(IO3)2 (aq.) --------> Ba(IO3)2 (s) + Mg(NO3)2 (aq.)
Pb(NO3)2 (aq.) + Mg(IO3)2 (aq.) --------> Pb(IO3)2 (s) + Mg(NO3)2 (aq.)
(4)
BaSO4 (s)
Pb(OH)2 (s)