predict the products & write the balanced equation including physical states, if no reaction give reasons why *classify the reaction type.?

Question

19. Solutions of magnesium acetate and ammonium sulfide are mixed.

20. Aqueous barium hydroxide is added to phosphoric acid.

21. Aluminum metal is added to aqueous copper(II) sulfate.

22. Zinc metal is added to nitric acid.

Answer 1

See if you can't do these with the hints that are given:

19. Solutions of magnesium acetate and ammonium sulfide are mixed.

Mg(C2H3O2-)2(aq) + (NH4)2S(aq) ==> double displacement forming a precipitate of magnesium sulfide

20. Aqueous barium hydroxide is added to phosphoric acid.

Ba(OH)2(aq) + H3PO4 ==> double displacement forming a precipitate of barium phosphate

21. Aluminum metal is added to aqueous copper(II) sulfate.

Al(s) + CuSO4(aq) ==> look in a table to see if Al will displace copper. If so, a single replacement rx. If not, NR

22. Zinc metal is added to nitric acid.

Zn(s) + HNO3(aq) ==> look in a table to see if Zn will displace hydrogen. If so, a single replacement rx. If not, NR