Write balanced net ionic equations for the precipitation reactions that occur when the following solutions are mixed. If no reaction occurs, write "no reaction"
a) silver nitrate and lithium hydroxide
b) ammonium sulfide and cobalt (II) bromide
I'm currently studying for my chemistry exam, and I already solved three of these problems, but I have no idea how to do these last two. Please help if you can and show your steps if you have the time to. Thank you!
silver hydroxide precipates
cobaltII sulfide precipates
Thanks for replying but silver hydroxide and cobalt (ii) sulfide is not what the question inquires. It's lithium hydroxide and cobalt (ii) bromide.
Of course! I'd be happy to help you with the last two problems. Let's go step-by-step with each one:
a) silver nitrate and lithium hydroxide
Step 1: Write the balanced molecular equation:
AgNO3 (aq) + LiOH (aq) -> AgOH (s) + LiNO3 (aq)
Step 2: Write the complete ionic equation by separating all the soluble compounds into their ions:
Ag+ (aq) + NO3- (aq) + Li+ (aq) + OH- (aq) -> AgOH (s) + Li+ (aq) + NO3- (aq)
Step 3: Write the net ionic equation by eliminating the spectator ions (ions that appear on both sides of the equation):
Ag+ (aq) + OH- (aq) -> AgOH (s)
Therefore, the balanced net ionic equation for the reaction between silver nitrate and lithium hydroxide is:
Ag+ (aq) + OH- (aq) -> AgOH (s)
b) ammonium sulfide and cobalt (II) bromide
Step 1: Write the balanced molecular equation:
(NH4)2S (aq) + CoBr2 (aq) -> 2 NH4Br (aq) + CoS (s)
Step 2: Write the complete ionic equation by separating all the soluble compounds into their ions:
2 NH4+ (aq) + S2- (aq) + Co2+ (aq) + 2 Br- (aq) -> 2 NH4+ (aq) + 2 Br- (aq) + CoS (s)
Step 3: Write the net ionic equation by eliminating the spectator ions:
S2- (aq) + Co2+ (aq) -> CoS (s)
Therefore, the balanced net ionic equation for the reaction between ammonium sulfide and cobalt (II) bromide is:
S2- (aq) + Co2+ (aq) -> CoS (s)
I hope this helps! Let me know if you have any further questions.
Sure! I can help you with that. To write balanced net ionic equations for precipitation reactions, we need to identify the ions present in the reactants and determine if any insoluble combinations can form.
a) silver nitrate and lithium hydroxide:
1. Write the molecular equation with the correct formulas for the compounds:
AgNO3(aq) + LiOH(aq) →
2. Determine the cations and anions in the reactants:
Ag+ (from AgNO3), NO3- (from AgNO3), Li+ (from LiOH), OH- (from LiOH)
3. Determine the possible reaction by swapping ions:
Ag+(aq) + OH-(aq) → AgOH(s)
4. Write the balanced net ionic equation, which only includes the participating ions:
Ag+(aq) + OH-(aq) → AgOH(s)
So, the balanced net ionic equation for the reaction of silver nitrate and lithium hydroxide is: Ag+(aq) + OH-(aq) → AgOH(s).
b) ammonium sulfide and cobalt (II) bromide:
1. Write the molecular equation with the correct formulas for the compounds:
(NH4)2S(aq) + CoBr2(aq) →
2. Determine the cations and anions in the reactants:
(NH4)+ (from (NH4)2S), S2- (from (NH4)2S), Co2+ (from CoBr2), Br- (from CoBr2)
3. Determine the possible reaction by swapping ions:
Co2+(aq) + S2-(aq) → CoS(s)
4. Write the balanced net ionic equation, which only includes the participating ions:
Co2+(aq) + S2-(aq) → CoS(s)
So, the balanced net ionic equation for the reaction of ammonium sulfide and cobalt (II) bromide is: Co2+(aq) + S2-(aq) → CoS(s).
I hope this helps! Let me know if you have any further questions.