Question

1. Predict the precipitate that forms when aqueous solutions of barium chloride and potassium sulfate are mixed? Write the overall and net ionic equation. Identify the spectator ions.

2. Write the balanced equation and the net ionic equation for the reaction of aluminum with hydrobromic acid? Determine which species is oxidized and which is reduced, as well as the oxidizing and reducing agents.

Answer 1

a Sol-) I) Predict the Precipitate that forms when aqueous solutions of barium chloride and potassium sulfute are mixed ?. write the overall and net ionic equation, Identify the spectator ions =) Bar Barium chloride (Bael) and potassium sulfate CK2s04). recets with each other to form precipitate of B sultate CBaso, & potassium chlorile ckel ) sult. This reaction is caved Precipitate revelion i.e Called double displacement reaction. =) Overcell balance equation - Raeb & Kason - (aq Basoi + 2 Kc can) can PP4 (5) = complete jonic equcetion :- Belt +2¢7 + 2x2 +504 +BaSO4 +267347 Ba (aq) "cag . can cagg caq) (aq) cs) cag) Cross out spectator ions in both side f remaining couation is net ionic equation. => spectator ions: - 2kt, 2c1 =) Net ionic equations- Bantenst 50% cars Bosones

Soll 23 write the balanced equation and the net ionic equation for the reaction of aluminum with hydrobromic aid 2. Determine which species is ovidized. and which is reduced, as well as the ouidizing of reducing agents. to form iminum is reacts with hydrobromic acid aluminum bromide and hydrogen vie. Called dihydrogen. This realtion is single displulement reaction. =) Balanced Equution- - 2 Alt 6 HBr 2 A1 BO 3 + 3 H2 can (9) car) (69) =) Complete ionic equation: 37 2 Alegt 6 H + 6 B 2 A1 +685 + 3H2 (s) cay cay car). cag) (g). Cross out spzetatoo ions f remaining equcetion is net Tonic equation, spectator ion is 6 B8 =) Net ionic equation- - 2 Alest 6th an 2 Apt + 3H2(g) =) Oneidation'- loss of elections or addition of oxygenorremoved of hydrogen is called onidation. Aluminum loses 3 electrons, Hence opidised species = AL. =) Reduction. Gain of elections or addition of hydrogen of removal of oreygen. is called oacidation.

In HBY removes Brice.guin of electrons takes lace & Hz is formed i.e. addition of hydrogen takes prace. Hence reduced species = H. realtion reactant removes Opedizing agent: During redore recetion reactant electrons from other reactanss is called oxidizing agent. Hence this recetion oridizing agent = HBZ. - Reducing agent: During redoxe recetion rauetunt loses electrons is called reducing agent. Hence in this reuetion Aluminum loses electrons. then reducing agent = Al.